C131121333133313233213331333133313331312111133133313331333232112111   >>    C13112133313331323321333133313331333131211113313331333133323211211   <<    C131121333133313233213331333133313331312111133133313331333232112113   >>      C131121333133313233213331333133313331312111133133313331333232112112   >>