C13112133313331323321333133313331333133313331311221123232213221   >>    C1311213331333132332133313331333133313331333131122112323221322   <<    C13112133313331323321333133313331333133313331311221123232213223   >>      C13112133313331323321333133313331333133313331311221123232213222   >>