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| 先祖返り Life Science Dictionary (Shuji Kaneko) ; 復帰 (ふっき) Life Science Dictionary (Shuji Kaneko) ; 復帰突然変異 Life Science Dictionary (Shuji Kaneko) ; 反転写真：像の左右を、 しゃしん：ぞうのさゆうを (hanten) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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| 逆コース (gyaku-kōsu) | |||
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| 前後 ichi1 news1 nf06 (ぜんご) | |||
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reversion : 6 phrases in 3 subjects |
| General | 4 |
| Technology | 1 |
| Telegraphy | 1 |