Present
| I | know |
| You | know |
| She | knows |
| We | know |
| They | know |
Past
| I | knew |
| You | knew |
| She | knew |
| We | knew |
| They | knew |
Perfect
| I | have | known |
| You | have | known |
| She | has | known |
| We | have | known |
| They | have | known |
Future
| I | will | know |
| You | will | know |
| She | will | know |
| We | will | know |
| They | will | know |
Past Perfect
| I | had | known |
| You | had | known |
| She | had | known |
| We | had | known |
| They | had | known |
Future Perfect
| I | will | have | known |
| You | will | have | known |
| She | will | have | known |
| We | will | have | known |
| They | will | have | known |
Present - Conditional
| I | would | know |
| You | would | know |
| She | would | know |
| We | would | know |
| They | would | know |
Perfect - Conditional
| I | would | have | known |
| You | would | have | known |
| She | would | have | known |
| We | would | have | known |
| They | would | have | known |