MAYBE
201.34/55.42	MAYBE
201.34/55.42	
201.34/55.42	Problem:
201.34/55.42	 b(b(x1)) -> b(a(x1))
201.34/55.42	 a(b(x1)) -> b(c(c(x1)))
201.34/55.42	 a(c(x1)) -> a(a(x1))
201.34/55.42	 c(a(x1)) -> b(a(a(x1)))
201.34/55.42	
201.34/55.42	Proof:
201.34/55.42	 Open
201.34/55.42	EOF