ABCDEFGHIJKLMNOPQRSTUVWXYZ
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三角形面積
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10201001001020304050
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20100200300400500
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25125250375500625
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30150300450600750
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35175350525700875
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402004006008001000
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452254506759001125
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b (列)
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ab9021020304050
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230902a (欄)110140190116012501
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210240290216022502
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310340390316032503
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410440490416042504
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510540590516052505
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