C1111233131211111211113313331333133313332213113121111331322331211   >>    C111123313121111121111331333133313331333221311312111133132233121   <<    C1111233131211111211113313331333133313332213113121111331322331213   >>      C1111233131211111211113313331333133313332213113121111331322331212   >>