C131121333133313233213331333133313331333133313331333133313123223212111133211131   >>    C13112133313331323321333133313331333133313331333133313331312322321211113321113   <<    C131121333133313233213331333133313331333133313331333133313123223212111133211133   >>      C131121333133313233213331333133313331333133313331333133313123223212111133211132   >>