C131121333133313233213331333133313331333133313331333133313121111133111121   >>    C13112133313331323321333133313331333133313331333133313331312111113311112   <<    C131121333133313233213331333133313331333133313331333133313121111133111123   >>      C131121333133313233213331333133313331333133313331333133313121111133111122   >>