| 現在 (Present) "strengthen" | I | strengthen | |
| 現在継続 (Present Continuous) "strengthen" | I | am strengthening | |
| 単純な過去 (Simple past) "strengthen" | I | strengthened | |
| 過去継続 (Past Continuous) "strengthen" | I | was strengthening | |
| 現在完了 (Present perfect) "strengthen" | I | have strengthened | |
| 連続完璧な存在 (Present perfect continuous) "strengthen" | I | have been strengthening | |
| 過去完了 (Past perfect) "strengthen" | I | had strengthened | |
| 過去の完璧な連続 (Past perfect continuous) "strengthen" | I | had been strengthening | |
| 未来 (Future) "strengthen" | I | will strengthen | |
| 連続将来 (Future continuous) "strengthen" | I | will be strengthening | |
| 未来完了 (Future perfect) "strengthen" | I | will have strengthened | |
| 連続完璧な将来 (Future perfect continuous) "strengthen" | I | will have been strengthening |