C131121333133313233213331333133313331333133313331333133313231123313222331   >>    C13112133313331323321333133313331333133313331333133313331323112331322233   <<    C131121333133313233213331333133313331333133313331333133313231123313222333   >>      C131121333133313233213331333133313331333133313331333133313231123313222332   >>