C312312111133131121333133313113313331333133112111133133313221211121   >>    C31231211113313112133313331311331333133313311211113313331322121112   <<    C312312111133131121333133313113313331333133112111133133313221211123   >>      C312312111133131121333133313113313331333133112111133133313221211122   >>