Present
| I | foil |
| You | foil |
| She | foils |
| We | foil |
| They | foil |
Past
| I | foiled |
| You | foiled |
| She | foiled |
| We | foiled |
| They | foiled |
Perfect
| I | have | foiled |
| You | have | foiled |
| She | has | foiled |
| We | have | foiled |
| They | have | foiled |
Future
| I | will | foil |
| You | will | foil |
| She | will | foil |
| We | will | foil |
| They | will | foil |
Past Perfect
| I | had | foiled |
| You | had | foiled |
| She | had | foiled |
| We | had | foiled |
| They | had | foiled |
Future Perfect
| I | will | have | foiled |
| You | will | have | foiled |
| She | will | have | foiled |
| We | will | have | foiled |
| They | will | have | foiled |
Present - Conditional
| I | would | foil |
| You | would | foil |
| She | would | foil |
| We | would | foil |
| They | would | foil |
Perfect - Conditional
| I | would | have | foiled |
| You | would | have | foiled |
| She | would | have | foiled |
| We | would | have | foiled |
| They | would | have | foiled |