C11111333133313232233133313331333131133131211113313113313332113121   >>    C1111133313331323223313331333133313113313121111331311331333211312   <<    C11111333133313232233133313331333131133131211113313113313332113123   >>      C11111333133313232233133313331333131133131211113313113313332113122   >>