MAYBE
TRS:
 {cond(true(), x, y) -> cond(gr(x, y), y, x),
          gr(0(), x) -> false(),
       gr(s(x), 0()) -> true(),
      gr(s(x), s(y)) -> gr(x, y)}
 DP:
  Strict:
   {cond#(true(), x, y) -> cond#(gr(x, y), y, x),
    cond#(true(), x, y) -> gr#(x, y),
        gr#(s(x), s(y)) -> gr#(x, y)}
  Weak:
  {cond(true(), x, y) -> cond(gr(x, y), y, x),
           gr(0(), x) -> false(),
        gr(s(x), 0()) -> true(),
       gr(s(x), s(y)) -> gr(x, y)}
  EDG:
   {(gr#(s(x), s(y)) -> gr#(x, y), gr#(s(x), s(y)) -> gr#(x, y))
    (cond#(true(), x, y) -> cond#(gr(x, y), y, x), cond#(true(), x, y) -> cond#(gr(x, y), y, x))
    (cond#(true(), x, y) -> cond#(gr(x, y), y, x), cond#(true(), x, y) -> gr#(x, y))
    (cond#(true(), x, y) -> gr#(x, y), gr#(s(x), s(y)) -> gr#(x, y))}
   SCCS:
    Scc:
     {gr#(s(x), s(y)) -> gr#(x, y)}
    Scc:
     {cond#(true(), x, y) -> cond#(gr(x, y), y, x)}
    SCC:
     Strict:
      {gr#(s(x), s(y)) -> gr#(x, y)}
     Weak:
     {cond(true(), x, y) -> cond(gr(x, y), y, x),
              gr(0(), x) -> false(),
           gr(s(x), 0()) -> true(),
          gr(s(x), s(y)) -> gr(x, y)}
     SPSC:
      Simple Projection:
       pi(gr#) = 0
      Strict:
       {}
      Qed
    SCC:
     Strict:
      {cond#(true(), x, y) -> cond#(gr(x, y), y, x)}
     Weak:
     {cond(true(), x, y) -> cond(gr(x, y), y, x),
              gr(0(), x) -> false(),
           gr(s(x), 0()) -> true(),
          gr(s(x), s(y)) -> gr(x, y)}
     Fail