English verb conjugation
COULD DRAB

Regular verb: drab - drabed - drabed

Affirmation

Simple form	V-ing form
I could drab you could drab he could drab we could drab you could drab they could drab	I could be drabing you could be drabing he could be drabing we could be drabing you could be drabing they could be drabing
Perfect	V-ing perfect
I could have drabed you could have drabed he could have drabed we could have drabed you could have drabed they could have drabed	I could have been drabing you could have been drabing he could have been drabing we could have been drabing you could have been drabing they could have been drabing

Negation

Simple form	V-ing form
I could not drab you could not drab he could not drab we could not drab you could not drab they could not drab	I could not be drabing you could not be drabing he could not be drabing we could not be drabing you could not be drabing they could not be drabing
Perfect	V-ing perfect
I could not have drabed you could not have drabed he could not have drabed we could not have drabed you could not have drabed they could not have drabed	I could not have been drabing you could not have been drabing he could not have been drabing we could not have been drabing you could not have been drabing they could not have been drabing

Interrogative form

Simple form	V-ing form
could I drab? could you drab? could he drab? could we drab? could you drab? could they drab?	could I be drabing? could you be drabing? could he be drabing? could we be drabing? could you be drabing? could they be drabing?
Perfect	V-ing perfect
could I have drabed? could you have drabed? could he have drabed? could we have drabed? could you have drabed? could they have drabed?	could I have been drabing? could you have been drabing? could he have been drabing? could we have been drabing? could you have been drabing? could they have been drabing?

Interro-negative form

Simple form	V-ing form
could I not drab? could you not drab? could he not drab? could we not drab? could you not drab? could they not drab?	could I not be drabing? could you not be drabing? could he not be drabing? could we not be drabing? could you not be drabing? could they not be drabing?
Perfect	V-ing perfect
could I not have drabed? could you not have drabed? could he not have drabed? could we not have drabed? could you not have drabed? could they not have drabed?	could I not have been drabing? could you not have been drabing? could he not have been drabing? could we not have been drabing? could you not have been drabing? could they not have been drabing?