English verb conjugation
COULD UNDERACT

Regular verb: underact - underacted - underacted

Affirmation

Simple form	V-ing form
I could underact you could underact he could underact we could underact you could underact they could underact	I could be underacting you could be underacting he could be underacting we could be underacting you could be underacting they could be underacting
Perfect	V-ing perfect
I could have underacted you could have underacted he could have underacted we could have underacted you could have underacted they could have underacted	I could have been underacting you could have been underacting he could have been underacting we could have been underacting you could have been underacting they could have been underacting

Negation

Simple form	V-ing form
I couldn't underact you couldn't underact he couldn't underact we couldn't underact you couldn't underact they couldn't underact	I couldn't be underacting you couldn't be underacting he couldn't be underacting we couldn't be underacting you couldn't be underacting they couldn't be underacting
Perfect	V-ing perfect
I couldn't have underacted you couldn't have underacted he couldn't have underacted we couldn't have underacted you couldn't have underacted they couldn't have underacted	I couldn't have been underacting you couldn't have been underacting he couldn't have been underacting we couldn't have been underacting you couldn't have been underacting they couldn't have been underacting

Interrogative form

Simple form	V-ing form
could I underact? could you underact? could he underact? could we underact? could you underact? could they underact?	could I be underacting? could you be underacting? could he be underacting? could we be underacting? could you be underacting? could they be underacting?
Perfect	V-ing perfect
could I have underacted? could you have underacted? could he have underacted? could we have underacted? could you have underacted? could they have underacted?	could I have been underacting? could you have been underacting? could he have been underacting? could we have been underacting? could you have been underacting? could they have been underacting?

Interro-negative form

Simple form	V-ing form
couldn't I underact? couldn't you underact? couldn't he underact? couldn't we underact? couldn't you underact? couldn't they underact?	couldn't I be underacting? couldn't you be underacting? couldn't he be underacting? couldn't we be underacting? couldn't you be underacting? couldn't they be underacting?
Perfect	V-ing perfect
couldn't I have underacted? couldn't you have underacted? couldn't he have underacted? couldn't we have underacted? couldn't you have underacted? couldn't they have underacted?	couldn't I have been underacting? couldn't you have been underacting? couldn't he have been underacting? couldn't we have been underacting? couldn't you have been underacting? couldn't they have been underacting?