C11111333133313232233133313331333131133131133132313331333133313331323221312121   >>    C1111133313331323223313331333133313113313113313231333133313331333132322131212   <<    C11111333133313232233133313331333131133131133132313331333133313331323221312123   >>      C11111333133313232233133313331333131133131133132313331333133313331323221312122   >>