| Simple | Progressive | Perfect | Progressive |
| Present |
| I drub |
| you drub |
| he/she/it drubs |
| we drub |
| you all drub |
| they drub |
|
| I am drubbing |
| you are drubbing |
| he/she/it is drubbing |
| we are drubbing |
| you all are drubbing |
| they are drubbing |
|
| I have drubbed |
| you have drubbed |
| he/she/it has drubbed |
| we have drubbed |
| you all have drubbed |
| they have drubbed |
|
| I have been drubbing |
| you have been drubbing |
| he/she/it has been drubbing |
| we have been drubbing |
| you all have been drubbing |
| they have been drubbing |
|
| Past |
| I drubbed |
| you drubbed |
| he/she/it drubbed |
| we drubbed |
| you all drubbed |
| they drubbed |
|
| I was drubbing |
| you were drubbing |
| he/she/it was drubbing |
| we were drubbing |
| you all were drubbing |
| they were drubbing |
|
| I had drubbed |
| you had drubbed |
| he/she/it had drubbed |
| we had drubbed |
| you all had drubbed |
| they had drubbed |
|
| I had been drubbing |
| you had been drubbing |
| he/she/it had been drubbing |
| we had been drubbing |
| you all had been drubbing |
| they had been drubbing |
|
| Future |
| I will drub |
| you will drub |
| he/she/it will drub |
| we will drub |
| you all will drub |
| they will drub |
|
| I will be drubbing |
| you will be drubbing |
| he/she/it will be drubbing |
| we are drubbing |
| you all will be drubbing |
| they will be drubbing |
|
| I will have drubbed |
| you will have drubbed |
| he/she/it will have drubbed |
| we will have drubbed |
| you all will have drubbed |
| they will have drubbed |
|
| I will have been drubbing |
| you will have been drubbing |
| he/she/it will have been drubbing |
| we will have been drubbing |
| you all will have been drubbing |
| they will have been drubbing |
|
