C11111333133313232233133313331333133313231322321111331322121111   >>    C1111133313331323223313331333133313331323132232111133132212111   <<    C11111333133313232233133313331333133313231322321111331322121113   >>      C11111333133313232233133313331333133313231322321111331322121112   >>