C11111333133313232233133313331333131133132313311211111211332211   >>    C1111133313331323223313331333133313113313231331121111121133221   <<    C11111333133313232233133313331333131133132313311211111211332213   >>      C11111333133313232233133313331333131133132313311211111211332212   >>