MAYBE
Time: 0.001589
TRS:
 {f(f(f(f(j(), a), b), c), d) -> f(f(a, b), f(f(a, d), c))}
 DP:
  DP:
   {f#(f(f(f(j(), a), b), c), d) -> f#(a, b),
    f#(f(f(f(j(), a), b), c), d) -> f#(a, d),
    f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)),
    f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c)}
  TRS:
  {f(f(f(f(j(), a), b), c), d) -> f(f(a, b), f(f(a, d), c))}
  UR:
   {f(f(f(f(j(), a), b), c), d) -> f(f(a, b), f(f(a, d), c)),
                        a(x, y) -> x,
                        a(x, y) -> y}
   EDG:
    {(f#(f(f(f(j(), a), b), c), d) -> f#(a, d), f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c))
     (f#(f(f(f(j(), a), b), c), d) -> f#(a, d), f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)))
     (f#(f(f(f(j(), a), b), c), d) -> f#(a, d), f#(f(f(f(j(), a), b), c), d) -> f#(a, d))
     (f#(f(f(f(j(), a), b), c), d) -> f#(a, d), f#(f(f(f(j(), a), b), c), d) -> f#(a, b))
     (f#(f(f(f(j(), a), b), c), d) -> f#(a, b), f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c))
     (f#(f(f(f(j(), a), b), c), d) -> f#(a, b), f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)))
     (f#(f(f(f(j(), a), b), c), d) -> f#(a, b), f#(f(f(f(j(), a), b), c), d) -> f#(a, d))
     (f#(f(f(f(j(), a), b), c), d) -> f#(a, b), f#(f(f(f(j(), a), b), c), d) -> f#(a, b))
     (f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)), f#(f(f(f(j(), a), b), c), d) -> f#(a, b))
     (f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)), f#(f(f(f(j(), a), b), c), d) -> f#(a, d))
     (f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)), f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)))
     (f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)), f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c))
     (f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c), f#(f(f(f(j(), a), b), c), d) -> f#(a, b))
     (f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c), f#(f(f(f(j(), a), b), c), d) -> f#(a, d))
     (f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c), f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)))
     (f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c), f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c))}
    STATUS:
     arrows: 0.000000
     SCCS (1):
      Scc:
       {f#(f(f(f(j(), a), b), c), d) -> f#(a, b),
        f#(f(f(f(j(), a), b), c), d) -> f#(a, d),
        f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)),
        f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c)}
      
      SCC (4):
       Strict:
        {f#(f(f(f(j(), a), b), c), d) -> f#(a, b),
         f#(f(f(f(j(), a), b), c), d) -> f#(a, d),
         f#(f(f(f(j(), a), b), c), d) -> f#(f(a, b), f(f(a, d), c)),
         f#(f(f(f(j(), a), b), c), d) -> f#(f(a, d), c)}
       Weak:
       {f(f(f(f(j(), a), b), c), d) -> f(f(a, b), f(f(a, d), c))}
       Open