Here's the insertion algorithm in Python. Step through the code and watch each line execute on the tree:
The penguins' feathers are "the most complicated and best insulating of any animal", he says. Over time they are damaged, so the penguins shed them annually.
（一）刑讯逼供、体罚、打骂、虐待、侮辱他人的；，详情可参考同城约会
The shooting left nine people dead and at least 25 wounded, with one student saying he barricaded in a classroom for two hours.
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Даниил Иринин (Редактор отдела «Наука и техника»)，这一点在51吃瓜中也有详细论述
'Paradise' Season 2 review: Great things lie beyond the bunker