C131121333133313233213331333133313331312111133133313331333133313331323221131221   >>    C13112133313331323321333133313331333131211113313331333133313331333132322113122   <<    C131121333133313233213331333133313331312111133133313331333133313331323221131223   >>      C131121333133313233213331333133313331312111133133313331333133313331323221131222   >>