C11111333133313232233133313331333131133132313311212111113112111   >>    C1111133313331323223313331333133313113313231331121211111311211   <<    C11111333133313232233133313331333131133132313311212111113112113   >>      C11111333133313232233133313331333131133132313311212111113112112   >>