C131121333133313233213331333133313331312111133133313331311313221   >>    C13112133313331323321333133313331333131211113313331333131131322   <<    C131121333133313233213331333133313331312111133133313331311313223   >>      C131121333133313233213331333133313331312111133133313331311313222   >>