C3132121111133313233121111331333133313331312121111133313232211121   >>    C313212111113331323312111133133313331333131212111113331323221112   <<    C3132121111133313233121111331333133313331312121111133313232211123   >>      C3132121111133313233121111331333133313331312121111133313232211122   >>