C131121333133313233213331333133313331333133313331333133313331333223313111211   >>    C13112133313331323321333133313331333133313331333133313331333133322331311121   <<    C131121333133313233213331333133313331333133313331333133313331333223313111213   >>      C131121333133313233213331333133313331333133313331333133313331333223313111212   >>