C131121333133313233213331333133313331333133313331333133313123223211111131323131   >>    C13112133313331323321333133313331333133313331333133313331312322321111113132313   <<    C131121333133313233213331333133313331333133313331333133313123223211111131323133   >>      C131121333133313233213331333133313331333133313331333133313123223211111131323132   >>