Present
| I | rationalise |
| You | rationalise |
| She | rationalises |
| We | rationalise |
| They | rationalise |
Past
| I | rationalised |
| You | rationalised |
| She | rationalised |
| We | rationalised |
| They | rationalised |
Perfect
| I | have | rationalised |
| You | have | rationalised |
| She | has | rationalised |
| We | have | rationalised |
| They | have | rationalised |
Future
| I | will | rationalise |
| You | will | rationalise |
| She | will | rationalise |
| We | will | rationalise |
| They | will | rationalise |
Past Perfect
| I | had | rationalised |
| You | had | rationalised |
| She | had | rationalised |
| We | had | rationalised |
| They | had | rationalised |
Future Perfect
| I | will | have | rationalised |
| You | will | have | rationalised |
| She | will | have | rationalised |
| We | will | have | rationalised |
| They | will | have | rationalised |
Present - Conditional
| I | would | rationalise |
| You | would | rationalise |
| She | would | rationalise |
| We | would | rationalise |
| They | would | rationalise |
Perfect - Conditional
| I | would | have | rationalised |
| You | would | have | rationalised |
| She | would | have | rationalised |
| We | would | have | rationalised |
| They | would | have | rationalised |