| Simple | Progressive | Perfect | Progressive |
| Present |
| I obstruct |
| you obstruct |
| he/she/it obstructs |
| we obstruct |
| you all obstruct |
| they obstruct |
|
| I am obstructing |
| you are obstructing |
| he/she/it is obstructing |
| we are obstructing |
| you all are obstructing |
| they are obstructing |
|
| I have obstructed |
| you have obstructed |
| he/she/it has obstructed |
| we have obstructed |
| you all have obstructed |
| they have obstructed |
|
| I have been obstructing |
| you have been obstructing |
| he/she/it has been obstructing |
| we have been obstructing |
| you all have been obstructing |
| they have been obstructing |
|
| Past |
| I obstructed |
| you obstructed |
| he/she/it obstructed |
| we obstructed |
| you all obstructed |
| they obstructed |
|
| I was obstructing |
| you were obstructing |
| he/she/it was obstructing |
| we were obstructing |
| you all were obstructing |
| they were obstructing |
|
| I had obstructed |
| you had obstructed |
| he/she/it had obstructed |
| we had obstructed |
| you all had obstructed |
| they had obstructed |
|
| I had been obstructing |
| you had been obstructing |
| he/she/it had been obstructing |
| we had been obstructing |
| you all had been obstructing |
| they had been obstructing |
|
| Future |
| I will obstruct |
| you will obstruct |
| he/she/it will obstruct |
| we will obstruct |
| you all will obstruct |
| they will obstruct |
|
| I will be obstructing |
| you will be obstructing |
| he/she/it will be obstructing |
| we are obstructing |
| you all will be obstructing |
| they will be obstructing |
|
| I will have obstructed |
| you will have obstructed |
| he/she/it will have obstructed |
| we will have obstructed |
| you all will have obstructed |
| they will have obstructed |
|
| I will have been obstructing |
| you will have been obstructing |
| he/she/it will have been obstructing |
| we will have been obstructing |
| you all will have been obstructing |
| they will have been obstructing |
|
