C131121333133313233213331333133313331333133313231323112113122131   >>    C13112133313331323321333133313331333133313331323132311211312213   <<    C131121333133313233213331333133313331333133313231323112113122133   >>      C131121333133313233213331333133313331333133313231323112113122132   >>