C131121333133313233213331333133313331333133313331321123231313331   >>    C13112133313331323321333133313331333133313331333132112323131333   <<    C131121333133313233213331333133313331333133313331321123231313333   >>      C131121333133313233213331333133313331333133313331321123231313332   >>