C3123121111113313121111331333133313311211113313331333132231323231   >>    C312312111111331312111133133313331331121111331333133313223132323   <<    C3123121111113313121111331333133313311211113313331333132231323233   >>      C3123121111113313121111331333133313311211113313331333132231323232   >>