C1111233131211111211113313331333133313331333133313331333133313233213331111   >>    C111123313121111121111331333133313331333133313331333133313331323321333111   <<    C1111233131211111211113313331333133313331333133313331333133313233213331113   >>      C1111233131211111211113313331333133313331333133313331333133313233213331112   >>