Present
| I | contaminate |
| You | contaminate |
| She | contaminates |
| We | contaminate |
| They | contaminate |
Past
| I | contaminated |
| You | contaminated |
| She | contaminated |
| We | contaminated |
| They | contaminated |
Perfect
| I | have | contaminated |
| You | have | contaminated |
| She | has | contaminated |
| We | have | contaminated |
| They | have | contaminated |
Future
| I | will | contaminate |
| You | will | contaminate |
| She | will | contaminate |
| We | will | contaminate |
| They | will | contaminate |
Past Perfect
| I | had | contaminated |
| You | had | contaminated |
| She | had | contaminated |
| We | had | contaminated |
| They | had | contaminated |
Future Perfect
| I | will | have | contaminated |
| You | will | have | contaminated |
| She | will | have | contaminated |
| We | will | have | contaminated |
| They | will | have | contaminated |
Present - Conditional
| I | would | contaminate |
| You | would | contaminate |
| She | would | contaminate |
| We | would | contaminate |
| They | would | contaminate |
Perfect - Conditional
| I | would | have | contaminated |
| You | would | have | contaminated |
| She | would | have | contaminated |
| We | would | have | contaminated |
| They | would | have | contaminated |