English verb conjugation
COULD PRONG

Regular verb: prong - pronged - pronged

Affirmation

Simple form	V-ing form
I could prong you could prong he could prong we could prong you could prong they could prong	I could be pronging you could be pronging he could be pronging we could be pronging you could be pronging they could be pronging
Perfect	V-ing perfect
I could have pronged you could have pronged he could have pronged we could have pronged you could have pronged they could have pronged	I could have been pronging you could have been pronging he could have been pronging we could have been pronging you could have been pronging they could have been pronging

Negation

Simple form	V-ing form
I couldn't prong you couldn't prong he couldn't prong we couldn't prong you couldn't prong they couldn't prong	I couldn't be pronging you couldn't be pronging he couldn't be pronging we couldn't be pronging you couldn't be pronging they couldn't be pronging
Perfect	V-ing perfect
I couldn't have pronged you couldn't have pronged he couldn't have pronged we couldn't have pronged you couldn't have pronged they couldn't have pronged	I couldn't have been pronging you couldn't have been pronging he couldn't have been pronging we couldn't have been pronging you couldn't have been pronging they couldn't have been pronging

Interrogative form

Simple form	V-ing form
could I prong? could you prong? could he prong? could we prong? could you prong? could they prong?	could I be pronging? could you be pronging? could he be pronging? could we be pronging? could you be pronging? could they be pronging?
Perfect	V-ing perfect
could I have pronged? could you have pronged? could he have pronged? could we have pronged? could you have pronged? could they have pronged?	could I have been pronging? could you have been pronging? could he have been pronging? could we have been pronging? could you have been pronging? could they have been pronging?

Interro-negative form

Simple form	V-ing form
couldn't I prong? couldn't you prong? couldn't he prong? couldn't we prong? couldn't you prong? couldn't they prong?	couldn't I be pronging? couldn't you be pronging? couldn't he be pronging? couldn't we be pronging? couldn't you be pronging? couldn't they be pronging?
Perfect	V-ing perfect
couldn't I have pronged? couldn't you have pronged? couldn't he have pronged? couldn't we have pronged? couldn't you have pronged? couldn't they have pronged?	couldn't I have been pronging? couldn't you have been pronging? couldn't he have been pronging? couldn't we have been pronging? couldn't you have been pronging? couldn't they have been pronging?