Present
| I | catalyse |
| You | catalyse |
| She | catalyses |
| We | catalyse |
| They | catalyse |
Past
| I | catalysed |
| You | catalysed |
| She | catalysed |
| We | catalysed |
| They | catalysed |
Perfect
| I | have | catalysed |
| You | have | catalysed |
| She | has | catalysed |
| We | have | catalysed |
| They | have | catalysed |
Future
| I | will | catalyse |
| You | will | catalyse |
| She | will | catalyse |
| We | will | catalyse |
| They | will | catalyse |
Past Perfect
| I | had | catalysed |
| You | had | catalysed |
| She | had | catalysed |
| We | had | catalysed |
| They | had | catalysed |
Future Perfect
| I | will | have | catalysed |
| You | will | have | catalysed |
| She | will | have | catalysed |
| We | will | have | catalysed |
| They | will | have | catalysed |
Present - Conditional
| I | would | catalyse |
| You | would | catalyse |
| She | would | catalyse |
| We | would | catalyse |
| They | would | catalyse |
Perfect - Conditional
| I | would | have | catalysed |
| You | would | have | catalysed |
| She | would | have | catalysed |
| We | would | have | catalysed |
| They | would | have | catalysed |