Infinitive: to happen on sth
Participle: happened on sth
Gerund: happening on sth
| I | happen on sth |
| you | happen on sth |
| he;she;it | happens on sth |
| we | happen on sth |
| you | happen on sth |
| they | happen on sth |
| I | have happened on sth |
| you | have happened on sth |
| he;she;it | has happened on sth |
| we | have happened on sth |
| you | have happened on sth |
| they | have happened on sth |
| I | happened on sth |
| you | happened on sth |
| he;she;it | happened on sth |
| we | happened on sth |
| you | happened on sth |
| they | happened on sth |
| I | had happened on sth |
| you | had happened on sth |
| he;she;it | had happened on sth |
| we | had happened on sth |
| you | had happened on sth |
| they | had happened on sth |
| I | will happen on sth |
| you | will happen on sth |
| he;she;it | will happen on sth |
| we | will happen on sth |
| you | will happen on sth |
| they | will happen on sth |
| I | will have happened on sth |
| you | will have happened on sth |
| he;she;it | will have happened on sth |
| we | will have happened on sth |
| you | will have happened on sth |
| they | will have happened on sth |
| I | happen on sth |
| you | happen on sth |
| he;she;it | happen on sth |
| we | happen on sth |
| you | happen on sth |
| they | happen on sth |
| I | have happened on sth |
| you | have happened on sth |
| he;she;it | have happened on sth |
| we | have happened on sth |
| you | have happened on sth |
| they | have happened on sth |
| I | happened on sth |
| you | happened on sth |
| he;she;it | happened on sth |
| we | happened on sth |
| you | happened on sth |
| they | happened on sth |
| I | had happened on sth |
| you | had happened on sth |
| he;she;it | had happened on sth |
| we | had happened on sth |
| you | had happened on sth |
| they | had happened on sth |
| I | would happen on sth |
| you | would happen on sth |
| he;she;it | would happen on sth |
| we | would happen on sth |
| you | would happen on sth |
| they | would happen on sth |
| I | would have happened on sth |
| you | would have happened on sth |
| he;she;it | would have happened on sth |
| we | would have happened on sth |
| you | would have happened on sth |
| they | would have happened on sth |
| you | happen on sth |
| we | Let's happen on sth |
| you | happen on sth |
| I | am happening on sth |
| you | are happening on sth |
| he;she;it | is happening on sth |
| we | are happening on sth |
| you | are happening on sth |
| they | are happening on sth |
| I | have been happening on sth |
| you | have been happening on sth |
| he;she;it | has been happening on sth |
| we | have been happening on sth |
| you | have been happening on sth |
| they | have been happening on sth |
| I | was happening on sth |
| you | were happening on sth |
| he;she;it | was happening on sth |
| we | were happening on sth |
| you | were happening on sth |
| they | were happening on sth |
| I | had been happening on sth |
| you | had been happening on sth |
| he;she;it | had been happening on sth |
| we | had been happening on sth |
| you | had been happening on sth |
| they | had been happening on sth |
| I | will be happening on sth |
| you | will be happening on sth |
| he;she;it | will be happening on sth |
| we | will be happening on sth |
| you | will be happening on sth |
| they | will be happening on sth |
| I | will have been happening on sth |
| you | will have been happening on sth |
| he;she;it | will have been happening on sth |
| we | will have been happening on sth |
| you | will have been happening on sth |
| they | will have been happening on sth |
| I | would be happening on sth |
| you | would be happening on sth |
| he;she;it | would be happening on sth |
| we | would be happening on sth |
| you | would be happening on sth |
| they | would be happening on sth |
| I | would have been happening on sth |
| you | would have been happening on sth |
| he;she;it | would have been happening on sth |
| we | would have been happening on sth |
| you | would have been happening on sth |
| they | would have been happening on sth |