C131121333133313233213331333133313331333133313331333133313123223213331323132211   >>    C13112133313331323321333133313331333133313331333133313331312322321333132313221   <<    C131121333133313233213331333133313331333133313331333133313123223213331323132213   >>      C131121333133313233213331333133313331333133313331333133313123223213331323132212   >>