C131121333133313233213331333133313331333133313231333131333132331133121   >>    C13112133313331323321333133313331333133313331323133313133313233113312   <<    C131121333133313233213331333133313331333133313231333131333132331133123   >>      C131121333133313233213331333133313331333133313231333131333132331133122   >>