C11111333133313232233133313331333131123313221211113313113313231333131121111   >>    C1111133313331323223313331333133313112331322121111331311331323133313112111   <<    C11111333133313232233133313331333131123313221211113313113313231333131121113   >>      C11111333133313232233133313331333131123313221211113313113313231333131121112   >>