C131121333133313233213331333133313331333133313331333133313123223213222212321   >>    C13112133313331323321333133313331333133313331333133313331312322321322221232   <<    C131121333133313233213331333133313331333133313331333133313123223213222212323   >>      C131121333133313233213331333133313331333133313331333133313123223213222212322   >>