YES

Problem:
 __(__(X,Y),Z) -> __(X,__(Y,Z))
 __(X,nil()) -> X
 __(nil(),X) -> X
 and(tt(),X) -> activate(X)
 isList(V) -> isNeList(activate(V))
 isList(n__nil()) -> tt()
 isList(n____(V1,V2)) -> and(isList(activate(V1)),n__isList(activate(V2)))
 isNeList(V) -> isQid(activate(V))
 isNeList(n____(V1,V2)) -> and(isList(activate(V1)),n__isNeList(activate(V2)))
 isNeList(n____(V1,V2)) -> and(isNeList(activate(V1)),n__isList(activate(V2)))
 isNePal(V) -> isQid(activate(V))
 isNePal(n____(I,__(P,I))) -> and(isQid(activate(I)),n__isPal(activate(P)))
 isPal(V) -> isNePal(activate(V))
 isPal(n__nil()) -> tt()
 isQid(n__a()) -> tt()
 isQid(n__e()) -> tt()
 isQid(n__i()) -> tt()
 isQid(n__o()) -> tt()
 isQid(n__u()) -> tt()
 nil() -> n__nil()
 __(X1,X2) -> n____(X1,X2)
 isList(X) -> n__isList(X)
 isNeList(X) -> n__isNeList(X)
 isPal(X) -> n__isPal(X)
 a() -> n__a()
 e() -> n__e()
 i() -> n__i()
 o() -> n__o()
 u() -> n__u()
 activate(n__nil()) -> nil()
 activate(n____(X1,X2)) -> __(X1,X2)
 activate(n__isList(X)) -> isList(X)
 activate(n__isNeList(X)) -> isNeList(X)
 activate(n__isPal(X)) -> isPal(X)
 activate(n__a()) -> a()
 activate(n__e()) -> e()
 activate(n__i()) -> i()
 activate(n__o()) -> o()
 activate(n__u()) -> u()
 activate(X) -> X

Proof:
 Matrix Interpretation Processor: dim=1
  
  interpretation:
   [u] = 0,
   
   [o] = 4,
   
   [i] = 0,
   
   [e] = 0,
   
   [a] = 2,
   
   [n__u] = 0,
   
   [n__o] = 4,
   
   [n__i] = 0,
   
   [n__e] = 0,
   
   [n__a] = 2,
   
   [isPal](x0) = 4x0,
   
   [n__isPal](x0) = 4x0,
   
   [isNePal](x0) = x0,
   
   [n__isNeList](x0) = x0,
   
   [isQid](x0) = x0,
   
   [n__isList](x0) = x0,
   
   [n____](x0, x1) = 4x0 + x1 + 3,
   
   [n__nil] = 0,
   
   [isNeList](x0) = x0,
   
   [isList](x0) = x0,
   
   [activate](x0) = x0,
   
   [and](x0, x1) = 2x0 + x1 + 1,
   
   [tt] = 0,
   
   [nil] = 0,
   
   [__](x0, x1) = 4x0 + x1 + 3
  orientation:
   __(__(X,Y),Z) = 16X + 4Y + Z + 15 >= 4X + 4Y + Z + 6 = __(X,__(Y,Z))
   
   __(X,nil()) = 4X + 3 >= X = X
   
   __(nil(),X) = X + 3 >= X = X
   
   and(tt(),X) = X + 1 >= X = activate(X)
   
   isList(V) = V >= V = isNeList(activate(V))
   
   isList(n__nil()) = 0 >= 0 = tt()
   
   isList(n____(V1,V2)) = 4V1 + V2 + 3 >= 2V1 + V2 + 1 = and(isList(activate(V1)),n__isList(activate(V2)))
   
   isNeList(V) = V >= V = isQid(activate(V))
   
   isNeList(n____(V1,V2)) = 4V1 + V2 + 3 >= 2V1 + V2 + 1 = and(isList(activate(V1)),n__isNeList(activate(V2)))
   
   isNeList(n____(V1,V2)) = 4V1 + V2 + 3 >= 2V1 + V2 + 1 = and(isNeList(activate(V1)),n__isList(activate(V2)))
   
   isNePal(V) = V >= V = isQid(activate(V))
   
   isNePal(n____(I,__(P,I))) = 5I + 4P + 6 >= 2I + 4P + 1 = and(isQid(activate(I)),n__isPal(activate(P)))
   
   isPal(V) = 4V >= V = isNePal(activate(V))
   
   isPal(n__nil()) = 0 >= 0 = tt()
   
   isQid(n__a()) = 2 >= 0 = tt()
   
   isQid(n__e()) = 0 >= 0 = tt()
   
   isQid(n__i()) = 0 >= 0 = tt()
   
   isQid(n__o()) = 4 >= 0 = tt()
   
   isQid(n__u()) = 0 >= 0 = tt()
   
   nil() = 0 >= 0 = n__nil()
   
   __(X1,X2) = 4X1 + X2 + 3 >= 4X1 + X2 + 3 = n____(X1,X2)
   
   isList(X) = X >= X = n__isList(X)
   
   isNeList(X) = X >= X = n__isNeList(X)
   
   isPal(X) = 4X >= 4X = n__isPal(X)
   
   a() = 2 >= 2 = n__a()
   
   e() = 0 >= 0 = n__e()
   
   i() = 0 >= 0 = n__i()
   
   o() = 4 >= 4 = n__o()
   
   u() = 0 >= 0 = n__u()
   
   activate(n__nil()) = 0 >= 0 = nil()
   
   activate(n____(X1,X2)) = 4X1 + X2 + 3 >= 4X1 + X2 + 3 = __(X1,X2)
   
   activate(n__isList(X)) = X >= X = isList(X)
   
   activate(n__isNeList(X)) = X >= X = isNeList(X)
   
   activate(n__isPal(X)) = 4X >= 4X = isPal(X)
   
   activate(n__a()) = 2 >= 2 = a()
   
   activate(n__e()) = 0 >= 0 = e()
   
   activate(n__i()) = 0 >= 0 = i()
   
   activate(n__o()) = 4 >= 4 = o()
   
   activate(n__u()) = 0 >= 0 = u()
   
   activate(X) = X >= X = X
  problem:
   isList(V) -> isNeList(activate(V))
   isList(n__nil()) -> tt()
   isNeList(V) -> isQid(activate(V))
   isNePal(V) -> isQid(activate(V))
   isPal(V) -> isNePal(activate(V))
   isPal(n__nil()) -> tt()
   isQid(n__e()) -> tt()
   isQid(n__i()) -> tt()
   isQid(n__u()) -> tt()
   nil() -> n__nil()
   __(X1,X2) -> n____(X1,X2)
   isList(X) -> n__isList(X)
   isNeList(X) -> n__isNeList(X)
   isPal(X) -> n__isPal(X)
   a() -> n__a()
   e() -> n__e()
   i() -> n__i()
   o() -> n__o()
   u() -> n__u()
   activate(n__nil()) -> nil()
   activate(n____(X1,X2)) -> __(X1,X2)
   activate(n__isList(X)) -> isList(X)
   activate(n__isNeList(X)) -> isNeList(X)
   activate(n__isPal(X)) -> isPal(X)
   activate(n__a()) -> a()
   activate(n__e()) -> e()
   activate(n__i()) -> i()
   activate(n__o()) -> o()
   activate(n__u()) -> u()
   activate(X) -> X
  Matrix Interpretation Processor: dim=1
   
   interpretation:
    [u] = 7,
    
    [o] = 2,
    
    [i] = 7,
    
    [e] = 7,
    
    [a] = 2,
    
    [n__u] = 7,
    
    [n__o] = 0,
    
    [n__i] = 7,
    
    [n__e] = 7,
    
    [n__a] = 2,
    
    [isPal](x0) = x0 + 6,
    
    [n__isPal](x0) = x0 + 6,
    
    [isNePal](x0) = x0 + 3,
    
    [n__isNeList](x0) = x0,
    
    [isQid](x0) = x0,
    
    [n__isList](x0) = x0 + 5,
    
    [n____](x0, x1) = x0 + 2x1,
    
    [n__nil] = 1,
    
    [isNeList](x0) = x0 + 3,
    
    [isList](x0) = x0 + 6,
    
    [activate](x0) = x0 + 3,
    
    [tt] = 7,
    
    [nil] = 2,
    
    [__](x0, x1) = x0 + 2x1
   orientation:
    isList(V) = V + 6 >= V + 6 = isNeList(activate(V))
    
    isList(n__nil()) = 7 >= 7 = tt()
    
    isNeList(V) = V + 3 >= V + 3 = isQid(activate(V))
    
    isNePal(V) = V + 3 >= V + 3 = isQid(activate(V))
    
    isPal(V) = V + 6 >= V + 6 = isNePal(activate(V))
    
    isPal(n__nil()) = 7 >= 7 = tt()
    
    isQid(n__e()) = 7 >= 7 = tt()
    
    isQid(n__i()) = 7 >= 7 = tt()
    
    isQid(n__u()) = 7 >= 7 = tt()
    
    nil() = 2 >= 1 = n__nil()
    
    __(X1,X2) = X1 + 2X2 >= X1 + 2X2 = n____(X1,X2)
    
    isList(X) = X + 6 >= X + 5 = n__isList(X)
    
    isNeList(X) = X + 3 >= X = n__isNeList(X)
    
    isPal(X) = X + 6 >= X + 6 = n__isPal(X)
    
    a() = 2 >= 2 = n__a()
    
    e() = 7 >= 7 = n__e()
    
    i() = 7 >= 7 = n__i()
    
    o() = 2 >= 0 = n__o()
    
    u() = 7 >= 7 = n__u()
    
    activate(n__nil()) = 4 >= 2 = nil()
    
    activate(n____(X1,X2)) = X1 + 2X2 + 3 >= X1 + 2X2 = __(X1,X2)
    
    activate(n__isList(X)) = X + 8 >= X + 6 = isList(X)
    
    activate(n__isNeList(X)) = X + 3 >= X + 3 = isNeList(X)
    
    activate(n__isPal(X)) = X + 9 >= X + 6 = isPal(X)
    
    activate(n__a()) = 5 >= 2 = a()
    
    activate(n__e()) = 10 >= 7 = e()
    
    activate(n__i()) = 10 >= 7 = i()
    
    activate(n__o()) = 3 >= 2 = o()
    
    activate(n__u()) = 10 >= 7 = u()
    
    activate(X) = X + 3 >= X = X
   problem:
    isList(V) -> isNeList(activate(V))
    isList(n__nil()) -> tt()
    isNeList(V) -> isQid(activate(V))
    isNePal(V) -> isQid(activate(V))
    isPal(V) -> isNePal(activate(V))
    isPal(n__nil()) -> tt()
    isQid(n__e()) -> tt()
    isQid(n__i()) -> tt()
    isQid(n__u()) -> tt()
    __(X1,X2) -> n____(X1,X2)
    isPal(X) -> n__isPal(X)
    a() -> n__a()
    e() -> n__e()
    i() -> n__i()
    u() -> n__u()
    activate(n__isNeList(X)) -> isNeList(X)
   Matrix Interpretation Processor: dim=1
    
    interpretation:
     [u] = 0,
     
     [i] = 0,
     
     [e] = 3,
     
     [a] = 4,
     
     [n__u] = 0,
     
     [n__i] = 0,
     
     [n__e] = 3,
     
     [n__a] = 0,
     
     [isPal](x0) = 5x0 + 4,
     
     [n__isPal](x0) = x0 + 4,
     
     [isNePal](x0) = 3x0 + 4,
     
     [n__isNeList](x0) = 4x0 + 1,
     
     [isQid](x0) = 3x0,
     
     [n____](x0, x1) = x0 + x1,
     
     [n__nil] = 5,
     
     [isNeList](x0) = 4x0 + 1,
     
     [isList](x0) = 4x0 + 2,
     
     [activate](x0) = x0,
     
     [tt] = 0,
     
     [__](x0, x1) = x0 + x1
    orientation:
     isList(V) = 4V + 2 >= 4V + 1 = isNeList(activate(V))
     
     isList(n__nil()) = 22 >= 0 = tt()
     
     isNeList(V) = 4V + 1 >= 3V = isQid(activate(V))
     
     isNePal(V) = 3V + 4 >= 3V = isQid(activate(V))
     
     isPal(V) = 5V + 4 >= 3V + 4 = isNePal(activate(V))
     
     isPal(n__nil()) = 29 >= 0 = tt()
     
     isQid(n__e()) = 9 >= 0 = tt()
     
     isQid(n__i()) = 0 >= 0 = tt()
     
     isQid(n__u()) = 0 >= 0 = tt()
     
     __(X1,X2) = X1 + X2 >= X1 + X2 = n____(X1,X2)
     
     isPal(X) = 5X + 4 >= X + 4 = n__isPal(X)
     
     a() = 4 >= 0 = n__a()
     
     e() = 3 >= 3 = n__e()
     
     i() = 0 >= 0 = n__i()
     
     u() = 0 >= 0 = n__u()
     
     activate(n__isNeList(X)) = 4X + 1 >= 4X + 1 = isNeList(X)
    problem:
     isPal(V) -> isNePal(activate(V))
     isQid(n__i()) -> tt()
     isQid(n__u()) -> tt()
     __(X1,X2) -> n____(X1,X2)
     isPal(X) -> n__isPal(X)
     e() -> n__e()
     i() -> n__i()
     u() -> n__u()
     activate(n__isNeList(X)) -> isNeList(X)
    Matrix Interpretation Processor: dim=3
     
     interpretation:
            [1]
      [u] = [0]
            [0],
      
            [1]
      [i] = [0]
            [0],
      
            [1]
      [e] = [0]
            [0],
      
               [0]
      [n__u] = [0]
               [0],
      
               [0]
      [n__i] = [0]
               [0],
      
               [0]
      [n__e] = [0]
               [0],
      
                    [1 0 0]     [1]
      [isPal](x0) = [0 0 0]x0 + [0]
                    [0 0 0]     [0],
      
                       [1 0 0]  
      [n__isPal](x0) = [0 0 0]x0
                       [0 0 0]  ,
      
                      [1 0 0]  
      [isNePal](x0) = [0 0 0]x0
                      [0 0 0]  ,
      
                          [1 0 0]     [1]
      [n__isNeList](x0) = [0 0 0]x0 + [0]
                          [0 0 0]     [0],
      
                    [1 0 0]     [1]
      [isQid](x0) = [0 0 0]x0 + [0]
                    [0 0 0]     [0],
      
                        [1 0 0]     [1 0 0]  
      [n____](x0, x1) = [0 0 0]x0 + [0 0 0]x1
                        [0 0 0]     [0 0 0]  ,
      
                       [1 0 0]  
      [isNeList](x0) = [0 0 0]x0
                       [0 0 0]  ,
      
                       [1 0 0]  
      [activate](x0) = [0 0 0]x0
                       [0 0 0]  ,
      
             [0]
      [tt] = [0]
             [0],
      
                     [1 0 0]     [1 0 0]     [1]
      [__](x0, x1) = [0 0 0]x0 + [0 0 0]x1 + [0]
                     [0 0 0]     [0 0 0]     [0]
     orientation:
                 [1 0 0]    [1]    [1 0 0]                        
      isPal(V) = [0 0 0]V + [0] >= [0 0 0]V = isNePal(activate(V))
                 [0 0 0]    [0]    [0 0 0]                        
      
                      [1]    [0]       
      isQid(n__i()) = [0] >= [0] = tt()
                      [0]    [0]       
      
                      [1]    [0]       
      isQid(n__u()) = [0] >= [0] = tt()
                      [0]    [0]       
      
                  [1 0 0]     [1 0 0]     [1]    [1 0 0]     [1 0 0]                 
      __(X1,X2) = [0 0 0]X1 + [0 0 0]X2 + [0] >= [0 0 0]X1 + [0 0 0]X2 = n____(X1,X2)
                  [0 0 0]     [0 0 0]     [0]    [0 0 0]     [0 0 0]                 
      
                 [1 0 0]    [1]    [1 0 0]               
      isPal(X) = [0 0 0]X + [0] >= [0 0 0]X = n__isPal(X)
                 [0 0 0]    [0]    [0 0 0]               
      
            [1]    [0]         
      e() = [0] >= [0] = n__e()
            [0]    [0]         
      
            [1]    [0]         
      i() = [0] >= [0] = n__i()
            [0]    [0]         
      
            [1]    [0]         
      u() = [0] >= [0] = n__u()
            [0]    [0]         
      
                                 [1 0 0]    [1]    [1 0 0]               
      activate(n__isNeList(X)) = [0 0 0]X + [0] >= [0 0 0]X = isNeList(X)
                                 [0 0 0]    [0]    [0 0 0]               
     problem:
      
     Qed