Present
| I | foist |
| You | foist |
| She | foists |
| We | foist |
| They | foist |
Past
| I | foisted |
| You | foisted |
| She | foisted |
| We | foisted |
| They | foisted |
Perfect
| I | have | foisted |
| You | have | foisted |
| She | has | foisted |
| We | have | foisted |
| They | have | foisted |
Future
| I | will | foist |
| You | will | foist |
| She | will | foist |
| We | will | foist |
| They | will | foist |
Past Perfect
| I | had | foisted |
| You | had | foisted |
| She | had | foisted |
| We | had | foisted |
| They | had | foisted |
Future Perfect
| I | will | have | foisted |
| You | will | have | foisted |
| She | will | have | foisted |
| We | will | have | foisted |
| They | will | have | foisted |
Present - Conditional
| I | would | foist |
| You | would | foist |
| She | would | foist |
| We | would | foist |
| They | would | foist |
Perfect - Conditional
| I | would | have | foisted |
| You | would | have | foisted |
| She | would | have | foisted |
| We | would | have | foisted |
| They | would | have | foisted |