| I | clam up |
| you | clam up |
| he/she/it | clams up |
| we | clam up |
| you | clam up |
| they | clam up |
| I | have clammed up |
| you | have clammed up |
| he/she/it | has clammed up |
| we | have clammed up |
| you | have clammed up |
| they | have clammed up |
| I | clammed up |
| you | clammed up |
| he/she/it | clammed up |
| we | clammed up |
| you | clammed up |
| they | clammed up |
| I | had clammed up |
| you | had clammed up |
| he/she/it | had clammed up |
| we | had clammed up |
| you | had clammed up |
| they | had clammed up |
| I | will clam up |
| you | will clam up |
| he/she/it | will clam up |
| we | will clam up |
| you | will clam up |
| they | will clam up |
| I | will have clammed up |
| you | will have clammed up |
| he/she/it | will have clammed up |
| we | will have clammed up |
| you | will have clammed up |
| they | will have clammed up |
| I | am clamming up |
| you | are clamming up |
| he/she/it | is clamming up |
| we | are clamming up |
| you | are clamming up |
| they | are clamming up |
| I | have been clamming up |
| you | have been clamming up |
| he/she/it | has been clamming up |
| we | have been clamming up |
| you | have been clamming up |
| they | have been clamming up |
| I | was clamming up |
| you | were clamming up |
| he/she/it | was clamming up |
| we | were clamming up |
| you | were clamming up |
| they | were clamming up |
| I | had been clamming up |
| you | had been clamming up |
| he/she/it | had been clamming up |
| we | had been clamming up |
| you | had been clamming up |
| they | had been clamming up |
| I | will be clamming up |
| you | will be clamming up |
| he/she/it | will be clamming up |
| we | will be clamming up |
| you | will be clamming up |
| they | will be clamming up |
| I | will have been clamming up |
| you | will have been clamming up |
| he/she/it | will have been clamming up |
| we | will have been clamming up |
| you | will have been clamming up |
| they | will have been clamming up |
| I | would clam up |
| you | would clam up |
| he/she/it | would clam up |
| we | would clam up |
| you | would clam up |
| they | would clam up |
| I | would have clammed up |
| you | would have clammed up |
| he/she/it | would have clammed up |
| we | would have clammed up |
| you | would have clammed up |
| they | would have clammed up |
| I | would be clamming up |
| you | would be clamming up |
| he/she/it | would be clamming up |
| we | would be clamming up |
| you | would be clamming up |
| they | would be clamming up |
| I | would have been clamming up |
| you | would have been clamming up |
| he/she/it | would have been clamming up |
| we | would have been clamming up |
| you | would have been clamming up |
| they | would have been clamming up |
| You | clam up |
| we | Let's clam up |
| You | clam up |