C13112133313331323321333133313331333133313233313331333131312131   >>    C1311213331333132332133313331333133313331323331333133313131213   <<    C13112133313331323321333133313331333133313233313331333131312133   >>      C13112133313331323321333133313331333133313233313331333131312132   >>