Present
| I | obstruct |
| You | obstruct |
| She | obstructs |
| We | obstruct |
| They | obstruct |
Past
| I | obstructed |
| You | obstructed |
| She | obstructed |
| We | obstructed |
| They | obstructed |
Perfect
| I | have | obstructed |
| You | have | obstructed |
| She | has | obstructed |
| We | have | obstructed |
| They | have | obstructed |
Future
| I | will | obstruct |
| You | will | obstruct |
| She | will | obstruct |
| We | will | obstruct |
| They | will | obstruct |
Past Perfect
| I | had | obstructed |
| You | had | obstructed |
| She | had | obstructed |
| We | had | obstructed |
| They | had | obstructed |
Future Perfect
| I | will | have | obstructed |
| You | will | have | obstructed |
| She | will | have | obstructed |
| We | will | have | obstructed |
| They | will | have | obstructed |
Present - Conditional
| I | would | obstruct |
| You | would | obstruct |
| She | would | obstruct |
| We | would | obstruct |
| They | would | obstruct |
Perfect - Conditional
| I | would | have | obstructed |
| You | would | have | obstructed |
| She | would | have | obstructed |
| We | would | have | obstructed |
| They | would | have | obstructed |