C11111333133313232233133313331333131133132233133313113313111112131   >>    C1111133313331323223313331333133313113313223313331311331311111213   <<    C11111333133313232233133313331333131133132233133313113313111112133   >>      C11111333133313232233133313331333131133132233133313113313111112132   >>