C131121333133313233213331333133313331333133313331333133313331333131211111312221   >>    C13112133313331323321333133313331333133313331333133313331333133313121111131222   <<    C131121333133313233213331333133313331333133313331333133313331333131211111312223   >>      C131121333133313233213331333133313331333133313331333133313331333131211111312222   >>