196.89/50.12	MAYBE
196.89/50.12	
196.89/50.12	Problem:
196.89/50.12	 a(x1) -> x1
196.89/50.12	 a(b(c(x1))) -> b(c(b(a(x1))))
196.89/50.12	 b(x1) -> c(a(x1))
196.89/50.12	
196.89/50.12	Proof:
196.89/50.12	 Open
197.23/50.13	EOF