C3123121111113313121111331333133313331333223313331333112211231133221   >>    C312312111111331312111133133313331333133322331333133311221123113322   <<    C3123121111113313121111331333133313331333223313331333112211231133223   >>      C3123121111113313121111331333133313331333223313331333112211231133222   >>