| Simple | Progressive | Perfect | Progressive |
| Present |
| I thumb |
| you thumb |
| he/she/it thumbs |
| we thumb |
| you all thumb |
| they thumb |
|
| I am thumbing |
| you are thumbing |
| he/she/it is thumbing |
| we are thumbing |
| you all are thumbing |
| they are thumbing |
|
| I have thumbed |
| you have thumbed |
| he/she/it has thumbed |
| we have thumbed |
| you all have thumbed |
| they have thumbed |
|
| I have been thumbing |
| you have been thumbing |
| he/she/it has been thumbing |
| we have been thumbing |
| you all have been thumbing |
| they have been thumbing |
|
| Past |
| I thumbed |
| you thumbed |
| he/she/it thumbed |
| we thumbed |
| you all thumbed |
| they thumbed |
|
| I was thumbing |
| you were thumbing |
| he/she/it was thumbing |
| we were thumbing |
| you all were thumbing |
| they were thumbing |
|
| I had thumbed |
| you had thumbed |
| he/she/it had thumbed |
| we had thumbed |
| you all had thumbed |
| they had thumbed |
|
| I had been thumbing |
| you had been thumbing |
| he/she/it had been thumbing |
| we had been thumbing |
| you all had been thumbing |
| they had been thumbing |
|
| Future |
| I will thumb |
| you will thumb |
| he/she/it will thumb |
| we will thumb |
| you all will thumb |
| they will thumb |
|
| I will be thumbing |
| you will be thumbing |
| he/she/it will be thumbing |
| we are thumbing |
| you all will be thumbing |
| they will be thumbing |
|
| I will have thumbed |
| you will have thumbed |
| he/she/it will have thumbed |
| we will have thumbed |
| you all will have thumbed |
| they will have thumbed |
|
| I will have been thumbing |
| you will have been thumbing |
| he/she/it will have been thumbing |
| we will have been thumbing |
| you all will have been thumbing |
| they will have been thumbing |
|
