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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 18, 52, 127, 303, 697, 1551, 3386, 7313, 15618, 33272, 70932, 151753, 326848, 709895, 1555789, 3440224, 7669212, 17209242, 38807117, 87777806
(列表;图表;参考文献;听;历史;文本;内部格式)
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