C13112133313331323321333133313331333133313331333133313331312111111312111   >>    C1311213331333132332133313331333133313331333133313331333131211111131211   <<    C13112133313331323321333133313331333133313331333133313331312111111312113   >>      C13112133313331323321333133313331333133313331333133313331312111111312112   >>