C131121333133313233213331333133313331333133313331333133313123223212111111211211   >>    C13112133313331323321333133313331333133313331333133313331312322321211111121121   <<    C131121333133313233213331333133313331333133313331333133313123223212111111211213   >>      C131121333133313233213331333133313331333133313331333133313123223212111111211212   >>