C31211133313132313231323331313132313231313232233132333132322123221   >>    C3121113331313231323132333131313231323131323223313233313232212322   <<    C31211133313132313231323331313132313231313232233132333132322123223   >>      C31211133313132313231323331313132313231313232233132333132322123222   >>