C131121333133313233213331333133313331312111133133313331322131121121   >>    C13112133313331323321333133313331333131211113313331333132213112112   <<    C131121333133313233213331333133313331312111133133313331322131121123   >>      C131121333133313233213331333133313331312111133133313331322131121122   >>