Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could forbid sth you could forbid sth he could forbid sth we could forbid sth you could forbid sth they could forbid sth
V-ing form
I could be forbid sthing you could be forbid sthing he could be forbid sthing we could be forbid sthing you could be forbid sthing they could be forbid sthing
Perfect
I could have forbid sthed you could have forbid sthed he could have forbid sthed we could have forbid sthed you could have forbid sthed they could have forbid sthed
V-ing perfect
I could have been forbid sthing you could have been forbid sthing he could have been forbid sthing we could have been forbid sthing you could have been forbid sthing they could have been forbid sthing
Negation
Simple form
I could not forbid sth you could not forbid sth he could not forbid sth we could not forbid sth you could not forbid sth they could not forbid sth
V-ing form
I could not be forbid sthing you could not be forbid sthing he could not be forbid sthing we could not be forbid sthing you could not be forbid sthing they could not be forbid sthing
Perfect
I could not have forbid sthed you could not have forbid sthed he could not have forbid sthed we could not have forbid sthed you could not have forbid sthed they could not have forbid sthed
V-ing perfect
I could not have been forbid sthing you could not have been forbid sthing he could not have been forbid sthing we could not have been forbid sthing you could not have been forbid sthing they could not have been forbid sthing
Interrogative form
Simple form
could I forbid sth? could you forbid sth? could he forbid sth? could we forbid sth? could you forbid sth? could they forbid sth?
V-ing form
could I be forbid sthing? could you be forbid sthing? could he be forbid sthing? could we be forbid sthing? could you be forbid sthing? could they be forbid sthing?
Perfect
could I have forbid sthed? could you have forbid sthed? could he have forbid sthed? could we have forbid sthed? could you have forbid sthed? could they have forbid sthed?
V-ing perfect
could I have been forbid sthing? could you have been forbid sthing? could he have been forbid sthing? could we have been forbid sthing? could you have been forbid sthing? could they have been forbid sthing?
Interro-negative form
Simple form
could I not forbid sth? could you not forbid sth? could he not forbid sth? could we not forbid sth? could you not forbid sth? could they not forbid sth?
V-ing form
could I not be forbid sthing? could you not be forbid sthing? could he not be forbid sthing? could we not be forbid sthing? could you not be forbid sthing? could they not be forbid sthing?
Perfect
could I not have forbid sthed? could you not have forbid sthed? could he not have forbid sthed? could we not have forbid sthed? could you not have forbid sthed? could they not have forbid sthed?
V-ing perfect
could I not have been forbid sthing? could you not have been forbid sthing? could he not have been forbid sthing? could we not have been forbid sthing? could you not have been forbid sthing? could they not have been forbid sthing?