C11111211113313112113313331333133313331333132313331333133313232233131232223231   >>    C1111121111331311211331333133313331333133313231333133313331323223313123222323   <<    C11111211113313112113313331333133313331333132313331333133313232233131232223233   >>      C11111211113313112113313331333133313331333132313331333133313232233131232223232   >>