MAYBE
0.00/0.02	 The problem does not contain well-formed TRSs:
0.00/0.02	   Strict Trs:
0.00/0.02	     { U31(tt()) -> N
0.00/0.02	     , U41(tt()) -> s(plus(N, M))
0.00/0.02	     , plus(N, s(M)) -> U41(and(and(isNat())))
0.00/0.02	     , plus(N, 0()) -> U31(and(isNat()))
0.00/0.02	     , and(tt()) -> X
0.00/0.02	     , U11(tt()) -> U12(isNat())
0.00/0.02	     , U12(tt()) -> U13(isNat())
0.00/0.02	     , isNat() -> tt()
0.00/0.02	     , isNat() -> U11(and(isNatKind()))
0.00/0.02	     , isNat() -> U21(isNatKind())
0.00/0.02	     , U13(tt()) -> tt()
0.00/0.02	     , U21(tt()) -> U22(isNat())
0.00/0.02	     , U22(tt()) -> tt()
0.00/0.02	     , isNatKind() -> tt()
0.00/0.02	     , isNatKind() -> and(isNatKind())
0.00/0.02	     , isNatKind() -> isNatKind() }
0.00/0.02	   StartTerms: basic terms
0.00/0.02	   Strategy: none
0.00/0.02	EOF