C11111333133313232233133313331333131133132313311232313331311331322231322121   >>    C1111133313331323223313331333133313113313231331123231333131133132223132212   <<    C11111333133313232233133313331333131133132313311232313331311331322231322123   >>      C11111333133313232233133313331333131133132313311232313331311331322231322122   >>