C13112133313331323321333133313331333131211113313331323223331231   >>    C1311213331333132332133313331333133313121111331333132322333123   <<    C13112133313331323321333133313331333131211113313331323223331233   >>      C13112133313331323321333133313331333131211113313331323223331232   >>