C313212111133131211331333133313331333112113121111331322332233132322221   >>    C31321211113313121133133313331333133311211312111133132233223313232222   <<    C313212111133131211331333133313331333112113121111331322332233132322223   >>      C313212111133131211331333133313331333112113121111331322332233132322222   >>