C312312111133131121333133313113313331333133313331333121111331323211121   >>    C31231211113313112133313331311331333133313331333133312111133132321112   <<    C312312111133131121333133313113313331333133313331333121111331323211123   >>      C312312111133131121333133313113313331333133313331333121111331323211122   >>