C131121333133313233213331333133313331333133313331333133313123223213113321   >>    C13112133313331323321333133313331333133313331333133313331312322321311332   <<    C131121333133313233213331333133313331333133313331333133313123223213113323   >>      C131121333133313233213331333133313331333133313331333133313123223213113322   >>