Fill in the blanks in the usual manner. Click on the check button -- correct answers will be greyed out. If you prefer a more passive form of learning, skip to the hints below.
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| posse - to be able | |
| Present Indicative | possum |
| Imperfect Indicative | poteram |
| Future Indicative | potero |
| Perfect Indicative | potui |
| Pluperfect Indicative | potueram |
| Fututre Perfect Indicative | potuero |
| Present Subjunctive | possim |
| Imperfect Subjunctive | possem |
| Perfect Subjunctive | potuerim |
| Pluperfect Subjunctive | potuissem |