| Simple | Progressive | Perfect | Progressive |
| Present |
| I treble |
| you treble |
| he/she/it trebles |
| we treble |
| you all treble |
| they treble |
|
| I am trebling |
| you are trebling |
| he/she/it is trebling |
| we are trebling |
| you all are trebling |
| they are trebling |
|
| I have trebled |
| you have trebled |
| he/she/it has trebled |
| we have trebled |
| you all have trebled |
| they have trebled |
|
| I have been trebling |
| you have been trebling |
| he/she/it has been trebling |
| we have been trebling |
| you all have been trebling |
| they have been trebling |
|
| Past |
| I trebled |
| you trebled |
| he/she/it trebled |
| we trebled |
| you all trebled |
| they trebled |
|
| I was trebling |
| you were trebling |
| he/she/it was trebling |
| we were trebling |
| you all were trebling |
| they were trebling |
|
| I had trebled |
| you had trebled |
| he/she/it had trebled |
| we had trebled |
| you all had trebled |
| they had trebled |
|
| I had been trebling |
| you had been trebling |
| he/she/it had been trebling |
| we had been trebling |
| you all had been trebling |
| they had been trebling |
|
| Future |
| I will treble |
| you will treble |
| he/she/it will treble |
| we will treble |
| you all will treble |
| they will treble |
|
| I will be trebling |
| you will be trebling |
| he/she/it will be trebling |
| we are trebling |
| you all will be trebling |
| they will be trebling |
|
| I will have trebled |
| you will have trebled |
| he/she/it will have trebled |
| we will have trebled |
| you all will have trebled |
| they will have trebled |
|
| I will have been trebling |
| you will have been trebling |
| he/she/it will have been trebling |
| we will have been trebling |
| you all will have been trebling |
| they will have been trebling |
|
