C11111333133313232233133313331333131123313221211113313231333132212111   >>    C1111133313331323223313331333133313112331322121111331323133313221211   <<    C11111333133313232233133313331333131123313221211113313231333132212113   >>      C11111333133313232233133313331333131123313221211113313231333132212112   >>