| Simple | Progressive | Perfect | Progressive |
| Present |
| I buttress |
| you buttress |
| he/she/it buttresses |
| we buttress |
| you all buttress |
| they buttress |
|
| I am buttressing |
| you are buttressing |
| he/she/it is buttressing |
| we are buttressing |
| you all are buttressing |
| they are buttressing |
|
| I have buttressed |
| you have buttressed |
| he/she/it has buttressed |
| we have buttressed |
| you all have buttressed |
| they have buttressed |
|
| I have been buttressing |
| you have been buttressing |
| he/she/it has been buttressing |
| we have been buttressing |
| you all have been buttressing |
| they have been buttressing |
|
| Past |
| I buttressed |
| you buttressed |
| he/she/it buttressed |
| we buttressed |
| you all buttressed |
| they buttressed |
|
| I was buttressing |
| you were buttressing |
| he/she/it was buttressing |
| we were buttressing |
| you all were buttressing |
| they were buttressing |
|
| I had buttressed |
| you had buttressed |
| he/she/it had buttressed |
| we had buttressed |
| you all had buttressed |
| they had buttressed |
|
| I had been buttressing |
| you had been buttressing |
| he/she/it had been buttressing |
| we had been buttressing |
| you all had been buttressing |
| they had been buttressing |
|
| Future |
| I will buttress |
| you will buttress |
| he/she/it will buttress |
| we will buttress |
| you all will buttress |
| they will buttress |
|
| I will be buttressing |
| you will be buttressing |
| he/she/it will be buttressing |
| we are buttressing |
| you all will be buttressing |
| they will be buttressing |
|
| I will have buttressed |
| you will have buttressed |
| he/she/it will have buttressed |
| we will have buttressed |
| you all will have buttressed |
| they will have buttressed |
|
| I will have been buttressing |
| you will have been buttressing |
| he/she/it will have been buttressing |
| we will have been buttressing |
| you all will have been buttressing |
| they will have been buttressing |
|
