| I | ascertain |
| you | ascertain |
| he/she/it | ascertains |
| we | ascertain |
| you | ascertain |
| they | ascertain |
| I | have ascertained |
| you | have ascertained |
| he/she/it | has ascertained |
| we | have ascertained |
| you | have ascertained |
| they | have ascertained |
| I | ascertained |
| you | ascertained |
| he/she/it | ascertained |
| we | ascertained |
| you | ascertained |
| they | ascertained |
| I | had ascertained |
| you | had ascertained |
| he/she/it | had ascertained |
| we | had ascertained |
| you | had ascertained |
| they | had ascertained |
| I | will ascertain |
| you | will ascertain |
| he/she/it | will ascertain |
| we | will ascertain |
| you | will ascertain |
| they | will ascertain |
| I | will have ascertained |
| you | will have ascertained |
| he/she/it | will have ascertained |
| we | will have ascertained |
| you | will have ascertained |
| they | will have ascertained |
| I | am ascertaining |
| you | are ascertaining |
| he/she/it | is ascertaining |
| we | are ascertaining |
| you | are ascertaining |
| they | are ascertaining |
| I | have been ascertaining |
| you | have been ascertaining |
| he/she/it | has been ascertaining |
| we | have been ascertaining |
| you | have been ascertaining |
| they | have been ascertaining |
| I | was ascertaining |
| you | were ascertaining |
| he/she/it | was ascertaining |
| we | were ascertaining |
| you | were ascertaining |
| they | were ascertaining |
| I | had been ascertaining |
| you | had been ascertaining |
| he/she/it | had been ascertaining |
| we | had been ascertaining |
| you | had been ascertaining |
| they | had been ascertaining |
| I | will be ascertaining |
| you | will be ascertaining |
| he/she/it | will be ascertaining |
| we | will be ascertaining |
| you | will be ascertaining |
| they | will be ascertaining |
| I | will have been ascertaining |
| you | will have been ascertaining |
| he/she/it | will have been ascertaining |
| we | will have been ascertaining |
| you | will have been ascertaining |
| they | will have been ascertaining |
| I | would ascertain |
| you | would ascertain |
| he/she/it | would ascertain |
| we | would ascertain |
| you | would ascertain |
| they | would ascertain |
| I | would have ascertained |
| you | would have ascertained |
| he/she/it | would have ascertained |
| we | would have ascertained |
| you | would have ascertained |
| they | would have ascertained |
| I | would be ascertaining |
| you | would be ascertaining |
| he/she/it | would be ascertaining |
| we | would be ascertaining |
| you | would be ascertaining |
| they | would be ascertaining |
| I | would have been ascertaining |
| you | would have been ascertaining |
| he/she/it | would have been ascertaining |
| we | would have been ascertaining |
| you | would have been ascertaining |
| they | would have been ascertaining |
| You | ascertain |
| we | Let's ascertain |
| You | ascertain |