English verb conjugation
COULD DEAFEN

Regular verb: deafen - deafened - deafened

Affirmation

Simple form	V-ing form
I could deafen you could deafen he could deafen we could deafen you could deafen they could deafen	I could be deafening you could be deafening he could be deafening we could be deafening you could be deafening they could be deafening
Perfect	V-ing perfect
I could have deafened you could have deafened he could have deafened we could have deafened you could have deafened they could have deafened	I could have been deafening you could have been deafening he could have been deafening we could have been deafening you could have been deafening they could have been deafening

Negation

Simple form	V-ing form
I couldn't deafen you couldn't deafen he couldn't deafen we couldn't deafen you couldn't deafen they couldn't deafen	I couldn't be deafening you couldn't be deafening he couldn't be deafening we couldn't be deafening you couldn't be deafening they couldn't be deafening
Perfect	V-ing perfect
I couldn't have deafened you couldn't have deafened he couldn't have deafened we couldn't have deafened you couldn't have deafened they couldn't have deafened	I couldn't have been deafening you couldn't have been deafening he couldn't have been deafening we couldn't have been deafening you couldn't have been deafening they couldn't have been deafening

Interrogative form

Simple form	V-ing form
could I deafen? could you deafen? could he deafen? could we deafen? could you deafen? could they deafen?	could I be deafening? could you be deafening? could he be deafening? could we be deafening? could you be deafening? could they be deafening?
Perfect	V-ing perfect
could I have deafened? could you have deafened? could he have deafened? could we have deafened? could you have deafened? could they have deafened?	could I have been deafening? could you have been deafening? could he have been deafening? could we have been deafening? could you have been deafening? could they have been deafening?

Interro-negative form

Simple form	V-ing form
couldn't I deafen? couldn't you deafen? couldn't he deafen? couldn't we deafen? couldn't you deafen? couldn't they deafen?	couldn't I be deafening? couldn't you be deafening? couldn't he be deafening? couldn't we be deafening? couldn't you be deafening? couldn't they be deafening?
Perfect	V-ing perfect
couldn't I have deafened? couldn't you have deafened? couldn't he have deafened? couldn't we have deafened? couldn't you have deafened? couldn't they have deafened?	couldn't I have been deafening? couldn't you have been deafening? couldn't he have been deafening? couldn't we have been deafening? couldn't you have been deafening? couldn't they have been deafening?