| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | clam up | clam up | clams up | clam up | clam up | clam up |
| Present continuous | am clamming up | are clamming up | is clamming up | are clamming up | are clamming up | are clamming up |
| Simple past | clammed up | clammed up | clammed up | clammed up | clammed up | clammed up |
| Past continuous | was clamming up | were clamming up | was clamming up | were clamming up | were clamming up | were clamming up |
| Simple future | will clam up | will clam up | will clam up | will clam up | will clam up | will clam up |
| Future continuous | will be clamming up | will be clamming up | will be clamming up | will be clamming up | will be clamming up | will be clamming up |
| Present perfect | have clammed up | have clammed up | has clammed up | have clammed up | have clammed up | have clammed up |
| Present perfect continuous | have been clamming up | have been clamming up | has been clamming up | have been clamming up | have been clamming up | have been clamming up |
| Present continuous | am clamming up | are clamming up | is clamming up | are clamming up | are clamming up | are clamming up |
| Past perfect | had clammed up | had clammed up | had clammed up | had clammed up | had clammed up | had clammed up |
| Past perfect continuous | had been clamming up | had been clamming up | had been clamming up | had been clamming up | had been clamming up | had been clamming up |
| Future perfect | will have clammed up | will have clammed up | will have clammed up | will have clammed up | will have clammed up | will have clammed up |
| Future perfect continuous | will have been clamming up | will have been clamming up | will have been clamming up | will have been clamming up | will have been clamming up | will have been clamming up |
| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | don't clam up | don't clam up | doesn't clam up | don't clam up | don't clam up | don't clam up |
| Present continuous | am not clamming up | are not clamming up | is not clamming up | are not clamming up | are not clamming up | are not clamming up |
| Simple past | didn't clam up | didn't clam up | didn't clam up | didn't clam up | didn't clam up | didn't clam up |
| Past continuous | was not clamming up | were not clamming up | was not clamming up | were not clamming up | were not clamming up | were not clamming up |
| Simple future | won't clam up | won't clam up | won't clam up | won't clam up | won't clam up | won't clam up |
| Future continuous | will not be clamming up | will not be clamming up | will not be clamming up | will not be clamming up | will not be clamming up | will not be clamming up |
| Present perfect | have not clammed up | have not clammed up | has not clammed up | have not clammed up | have not clammed up | have not clammed up |
| Present perfect continuous | have not been clamming up | have not been clamming up | has not been clamming up | have not been clamming up | have not been clamming up | have not been clamming up |
| Present continuous | am not clamming up | are not clamming up | is not clamming up | are not clamming up | are not clamming up | are not clamming up |
| Past perfect | had not clammed up | had not clammed up | had not clammed up | had not clammed up | had not clammed up | had not clammed up |
| Past perfect continuous | had not been clamming up | had not been clamming up | had not been clamming up | had not been clamming up | had not been clamming up | had not been clamming up |
| Future perfect | will have not clammed up | will have not clammed up | will have not clammed up | will have not clammed up | will have not clammed up | will have not clammed up |
| Future perfect continuous | will have not been clamming up | will have not been clamming up | will have not been clamming up | will have not been clamming up | will have not been clamming up | will have not been clamming up |