| 28th Japanese Speech Contest |
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| 27th Japanese Speech Contest |
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| 26th Japanese Speech Contest |
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| 25th Japanese Speech Contest |
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| canceled |
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| 24th Japanese Speech Contest |
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| 23rd Japanese Speech Contest |
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| 22nd Japanese Speech Contest |
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| 21st Japanese Speech Contest |
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| 20th Japanese Speech Contest |
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| 19th Japanese Speech Contest |
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| 18th Japanese Speech Contest |
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| 17th Japanese Speech Contest |
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