English verb conjugation
COULD MULLION

Regular verb: mullion - mullioned - mullioned

Affirmation

Simple form	V-ing form
I could mullion you could mullion he could mullion we could mullion you could mullion they could mullion	I could be mullioning you could be mullioning he could be mullioning we could be mullioning you could be mullioning they could be mullioning
Perfect	V-ing perfect
I could have mullioned you could have mullioned he could have mullioned we could have mullioned you could have mullioned they could have mullioned	I could have been mullioning you could have been mullioning he could have been mullioning we could have been mullioning you could have been mullioning they could have been mullioning

Negation

Simple form	V-ing form
I couldn't mullion you couldn't mullion he couldn't mullion we couldn't mullion you couldn't mullion they couldn't mullion	I couldn't be mullioning you couldn't be mullioning he couldn't be mullioning we couldn't be mullioning you couldn't be mullioning they couldn't be mullioning
Perfect	V-ing perfect
I couldn't have mullioned you couldn't have mullioned he couldn't have mullioned we couldn't have mullioned you couldn't have mullioned they couldn't have mullioned	I couldn't have been mullioning you couldn't have been mullioning he couldn't have been mullioning we couldn't have been mullioning you couldn't have been mullioning they couldn't have been mullioning

Interrogative form

Simple form	V-ing form
could I mullion? could you mullion? could he mullion? could we mullion? could you mullion? could they mullion?	could I be mullioning? could you be mullioning? could he be mullioning? could we be mullioning? could you be mullioning? could they be mullioning?
Perfect	V-ing perfect
could I have mullioned? could you have mullioned? could he have mullioned? could we have mullioned? could you have mullioned? could they have mullioned?	could I have been mullioning? could you have been mullioning? could he have been mullioning? could we have been mullioning? could you have been mullioning? could they have been mullioning?

Interro-negative form

Simple form	V-ing form
couldn't I mullion? couldn't you mullion? couldn't he mullion? couldn't we mullion? couldn't you mullion? couldn't they mullion?	couldn't I be mullioning? couldn't you be mullioning? couldn't he be mullioning? couldn't we be mullioning? couldn't you be mullioning? couldn't they be mullioning?
Perfect	V-ing perfect
couldn't I have mullioned? couldn't you have mullioned? couldn't he have mullioned? couldn't we have mullioned? couldn't you have mullioned? couldn't they have mullioned?	couldn't I have been mullioning? couldn't you have been mullioning? couldn't he have been mullioning? couldn't we have been mullioning? couldn't you have been mullioning? couldn't they have been mullioning?