Present
| I | overstrain |
| You | overstrain |
| She | overstrains |
| We | overstrain |
| They | overstrain |
Past
| I | overstrained |
| You | overstrained |
| She | overstrained |
| We | overstrained |
| They | overstrained |
Perfect
| I | have | overstrained |
| You | have | overstrained |
| She | has | overstrained |
| We | have | overstrained |
| They | have | overstrained |
Future
| I | will | overstrain |
| You | will | overstrain |
| She | will | overstrain |
| We | will | overstrain |
| They | will | overstrain |
Past Perfect
| I | had | overstrained |
| You | had | overstrained |
| She | had | overstrained |
| We | had | overstrained |
| They | had | overstrained |
Future Perfect
| I | will | have | overstrained |
| You | will | have | overstrained |
| She | will | have | overstrained |
| We | will | have | overstrained |
| They | will | have | overstrained |
Present - Conditional
| I | would | overstrain |
| You | would | overstrain |
| She | would | overstrain |
| We | would | overstrain |
| They | would | overstrain |
Perfect - Conditional
| I | would | have | overstrained |
| You | would | have | overstrained |
| She | would | have | overstrained |
| We | would | have | overstrained |
| They | would | have | overstrained |