C11111333133313232233133313331333131133132313311212111111331313111   >>    C1111133313331323223313331333133313113313231331121211111133131311   <<    C11111333133313232233133313331333131133132313311212111111331313113   >>      C11111333133313232233133313331333131133132313311212111111331313112   >>