C31231211111133131211113313331333133112111133133313331323221333112121   >>    C3123121111113313121111331333133313311211113313331333132322133311212   <<    C31231211111133131211113313331333133112111133133313331323221333112123   >>      C31231211111133131211113313331333133112111133133313331323221333112122   >>