C11111333133313232233133313331333131133132313331322121111113121311   >>    C1111133313331323223313331333133313113313231333132212111111312131   <<    C11111333133313232233133313331333131133132313331322121111113121313   >>      C11111333133313232233133313331333131133132313331322121111113121312   >>