MAYBE
82.73/40.77	MAYBE
82.73/40.77	
82.73/40.77	Problem:
82.73/40.77	 a(x1) -> b(x1)
82.73/40.77	 a(a(x1)) -> a(b(a(c(x1))))
82.73/40.77	 c(b(b(x1))) -> a(x1)
82.73/40.77	
82.73/40.77	Proof:
82.73/40.77	 Open
82.73/40.77	EOF