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Results:
正帰還 / せいきかん : 1）positive feedback
正式名 / せいしきめい : n 1）formal name
正引 / せいびき : n 1）lookup (e.g. in a dictionary, address list, etc.)
正引き / せいびき : n 1）lookup (e.g. in a dictionary, address list, etc.)
正弦 / せいげん : n 1）sine (trig)
正弦波 / せいげんは : n 1）sine wave
正当 / せいとう : adj-na n 1）just 2）justifiable 3）right 4）due 5）proper 6）equitable 7）reasonable 8）legitimate 9）legal 10）lawful P
正当化 / せいとうか : 1）justification 2）justify (vs)
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正帰還

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