C11111333133313232233133313331333131133132313331322121111121322123311   >>    C1111133313331323223313331333133313113313231333132212111112132212331   <<    C11111333133313232233133313331333131133132313331322121111121322123313   >>      C11111333133313232233133313331333131133132313331322121111121322123312   >>