| Simple | Progressive | Perfect | Progressive |
| Present |
| I decuple |
| you decuple |
| he/she/it decuples |
| we decuple |
| you all decuple |
| they decuple |
|
| I am decupling |
| you are decupling |
| he/she/it is decupling |
| we are decupling |
| you all are decupling |
| they are decupling |
|
| I have decupled |
| you have decupled |
| he/she/it has decupled |
| we have decupled |
| you all have decupled |
| they have decupled |
|
| I have been decupling |
| you have been decupling |
| he/she/it has been decupling |
| we have been decupling |
| you all have been decupling |
| they have been decupling |
|
| Past |
| I decupled |
| you decupled |
| he/she/it decupled |
| we decupled |
| you all decupled |
| they decupled |
|
| I was decupling |
| you were decupling |
| he/she/it was decupling |
| we were decupling |
| you all were decupling |
| they were decupling |
|
| I had decupled |
| you had decupled |
| he/she/it had decupled |
| we had decupled |
| you all had decupled |
| they had decupled |
|
| I had been decupling |
| you had been decupling |
| he/she/it had been decupling |
| we had been decupling |
| you all had been decupling |
| they had been decupling |
|
| Future |
| I will decuple |
| you will decuple |
| he/she/it will decuple |
| we will decuple |
| you all will decuple |
| they will decuple |
|
| I will be decupling |
| you will be decupling |
| he/she/it will be decupling |
| we are decupling |
| you all will be decupling |
| they will be decupling |
|
| I will have decupled |
| you will have decupled |
| he/she/it will have decupled |
| we will have decupled |
| you all will have decupled |
| they will have decupled |
|
| I will have been decupling |
| you will have been decupling |
| he/she/it will have been decupling |
| we will have been decupling |
| you all will have been decupling |
| they will have been decupling |
|
