C131121333133313233213331333133313331333133313231333131121131133133311323131   >>    C13112133313331323321333133313331333133313331323133313112113113313331132313   <<    C131121333133313233213331333133313331333133313231333131121131133133311323133   >>      C131121333133313233213331333133313331333133313231333131121131133133311323132   >>