C11111333133313232233133313331333131133132313311211111211111332212311   >>    C1111133313331323223313331333133313113313231331121111121111133221231   <<    C11111333133313232233133313331333131133132313311211111211111332212313   >>      C11111333133313232233133313331333131133132313311211111211111332212312   >>