C312312111133131121333133313113313331333133313331333121111331323232331   >>    C31231211113313112133313331311331333133313331333133312111133132323233   <<    C312312111133131121333133313113313331333133313331333121111331323232333   >>      C312312111133131121333133313113313331333133313331333121111331323232332   >>