C131121333133313233213331333133313331333133313231333131121133132223311   >>    C13112133313331323321333133313331333133313331323133313112113313222331   <<    C131121333133313233213331333133313331333133313231333131121133132223313   >>      C131121333133313233213331333133313331333133313231333131121133132223312   >>