| Simple | Progressive | Perfect | Progressive |
| Present |
| I clench |
| you clench |
| he/she/it clenches |
| we clench |
| you all clench |
| they clench |
|
| I am clenching |
| you are clenching |
| he/she/it is clenching |
| we are clenching |
| you all are clenching |
| they are clenching |
|
| I have clenched |
| you have clenched |
| he/she/it has clenched |
| we have clenched |
| you all have clenched |
| they have clenched |
|
| I have been clenching |
| you have been clenching |
| he/she/it has been clenching |
| we have been clenching |
| you all have been clenching |
| they have been clenching |
|
| Past |
| I clenched |
| you clenched |
| he/she/it clenched |
| we clenched |
| you all clenched |
| they clenched |
|
| I was clenching |
| you were clenching |
| he/she/it was clenching |
| we were clenching |
| you all were clenching |
| they were clenching |
|
| I had clenched |
| you had clenched |
| he/she/it had clenched |
| we had clenched |
| you all had clenched |
| they had clenched |
|
| I had been clenching |
| you had been clenching |
| he/she/it had been clenching |
| we had been clenching |
| you all had been clenching |
| they had been clenching |
|
| Future |
| I will clench |
| you will clench |
| he/she/it will clench |
| we will clench |
| you all will clench |
| they will clench |
|
| I will be clenching |
| you will be clenching |
| he/she/it will be clenching |
| we are clenching |
| you all will be clenching |
| they will be clenching |
|
| I will have clenched |
| you will have clenched |
| he/she/it will have clenched |
| we will have clenched |
| you all will have clenched |
| they will have clenched |
|
| I will have been clenching |
| you will have been clenching |
| he/she/it will have been clenching |
| we will have been clenching |
| you all will have been clenching |
| they will have been clenching |
|
