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Indicative
Present
| I | ascertain |
| you | ascertain |
| she | ascertains |
| we | ascertain |
| they | ascertain |
Perfect
| I | have | ascertained |
| you | have | ascertained |
| she | has | ascertained |
| we | have | ascertained |
| they | have | ascertained |
Past
| I | ascertained |
| you | ascertained |
| she | ascertained |
| we | ascertained |
| they | ascertained |
Pluperfect
| I | had | ascertained |
| you | had | ascertained |
| she | had | ascertained |
| we | had | ascertained |
| they | had | ascertained |
Future
| I | will | ascertain |
| you | will | ascertain |
| she | will | ascertain |
| we | will | ascertain |
| they | will | ascertain |
Future perfect
| I | will | have | ascertained |
| you | will | have | ascertained |
| she | will | have | ascertained |
| we | will | have | ascertained |
| they | will | have | ascertained |
Imperative
Present
| ascertain! | |
| let's | ascertain! |
Conditional
Present
| I | would | ascertain |
| you | would | ascertain |
| she | would | ascertain |
| we | would | ascertain |
| they | would | ascertain |
Perfect
| I | would | have | ascertained |
| you | would | have | ascertained |
| she | would | have | ascertained |
| we | would | have | ascertained |
| they | would | have | ascertained |
Conjunctive
Present
| I | ascertain |
| you | ascertain |
| she | ascertain |
| we | ascertain |
| they | ascertain |
Perfect
| I | have | ascertained |
| you | have | ascertained |
| she | have | ascertained |
| we | have | ascertained |
| they | have | ascertained |
Past
| I | ascertained |
| you | ascertained |
| she | ascertained |
| we | ascertained |
| they | ascertained |
Pluperfect
| I | had | ascertained |
| you | had | ascertained |
| she | had | ascertained |
| we | had | ascertained |
| they | had | ascertained |
Participle
Gerund
| ascertaining |
Past
| ascertained |