| I | fester |
| you | fester |
| he/she/it | festers |
| we | fester |
| you | fester |
| they | fester |
| I | have festered |
| you | have festered |
| he/she/it | has festered |
| we | have festered |
| you | have festered |
| they | have festered |
| I | festered |
| you | festered |
| he/she/it | festered |
| we | festered |
| you | festered |
| they | festered |
| I | had festered |
| you | had festered |
| he/she/it | had festered |
| we | had festered |
| you | had festered |
| they | had festered |
| I | will fester |
| you | will fester |
| he/she/it | will fester |
| we | will fester |
| you | will fester |
| they | will fester |
| I | will have festered |
| you | will have festered |
| he/she/it | will have festered |
| we | will have festered |
| you | will have festered |
| they | will have festered |
| I | am festering |
| you | are festering |
| he/she/it | is festering |
| we | are festering |
| you | are festering |
| they | are festering |
| I | have been festering |
| you | have been festering |
| he/she/it | has been festering |
| we | have been festering |
| you | have been festering |
| they | have been festering |
| I | was festering |
| you | were festering |
| he/she/it | was festering |
| we | were festering |
| you | were festering |
| they | were festering |
| I | had been festering |
| you | had been festering |
| he/she/it | had been festering |
| we | had been festering |
| you | had been festering |
| they | had been festering |
| I | will be festering |
| you | will be festering |
| he/she/it | will be festering |
| we | will be festering |
| you | will be festering |
| they | will be festering |
| I | will have been festering |
| you | will have been festering |
| he/she/it | will have been festering |
| we | will have been festering |
| you | will have been festering |
| they | will have been festering |
| I | would fester |
| you | would fester |
| he/she/it | would fester |
| we | would fester |
| you | would fester |
| they | would fester |
| I | would have festered |
| you | would have festered |
| he/she/it | would have festered |
| we | would have festered |
| you | would have festered |
| they | would have festered |
| I | would be festering |
| you | would be festering |
| he/she/it | would be festering |
| we | would be festering |
| you | would be festering |
| they | would be festering |
| I | would have been festering |
| you | would have been festering |
| he/she/it | would have been festering |
| we | would have been festering |
| you | would have been festering |
| they | would have been festering |
| You | fester |
| we | Let's fester |
| You | fester |