C11111333133313232233133313331333131133132313311211111111111121   >>    C1111133313331323223313331333133313113313231331121111111111112   <<    C11111333133313232233133313331333131133132313311211111111111123   >>      C11111333133313232233133313331333131133132313311211111111111122   >>