C131121333133313233213331333133313331312111133133313231333132331133121   >>    C13112133313331323321333133313331333131211113313331323133313233113312   <<    C131121333133313233213331333133313331312111133133313231333132331133123   >>      C131121333133313233213331333133313331312111133133313231333132331133122   >>