C131121333133313233213331333133313331333133313331333133313231122112131   >>    C13112133313331323321333133313331333133313331333133313331323112211213   <<    C131121333133313233213331333133313331333133313331333133313231122112133   >>      C131121333133313233213331333133313331333133313331333133313231122112132   >>