C3123121111113313121111331333133313311211113313331333132331133221221   >>    C312312111111331312111133133313331331121111331333133313233113322122   <<    C3123121111113313121111331333133313311211113313331333132331133221223   >>      C3123121111113313121111331333133313311211113313331333132331133221222   >>