C131121333133313233213331333133313331333133313331333133313121111331322112121   >>    C13112133313331323321333133313331333133313331333133313331312111133132211212   <<    C131121333133313233213331333133313331333133313331333133313121111331322112123   >>      C131121333133313233213331333133313331333133313331333133313121111331322112122   >>