C312312111133131121333133313113313331333133112111133133313222213232321   >>    C31231211113313112133313331311331333133313311211113313331322221323232   <<    C312312111133131121333133313113313331333133112111133133313222213232323   >>      C312312111133131121333133313113313331333133112111133133313222213232322   >>