196.70/50.41 MAYBE 196.70/50.41 196.70/50.41 Problem: 196.70/50.41 0(0(0(0(x1)))) -> 0(1(1(1(x1)))) 196.70/50.41 1(0(1(1(x1)))) -> 0(0(0(1(x1)))) 196.70/50.41 196.70/50.41 Proof: 196.70/50.41 Open 197.04/50.42 EOF