C11111333133313232233133313331333131133132313311211111211111133211   >>    C1111133313331323223313331333133313113313231331121111121111113321   <<    C11111333133313232233133313331333131133132313311211111211111133213   >>      C11111333133313232233133313331333131133132313311211111211111133212   >>