English verb conjugation
COULD UNDERREACT

Regular verb: underreact - underreacted - underreacted

Affirmation

Simple form	V-ing form
I could underreact you could underreact she could underreact we could underreact you could underreact they could underreact	I could be underreacting you could be underreacting she could be underreacting we could be underreacting you could be underreacting they could be underreacting
Perfect	V-ing perfect
I could have underreacted you could have underreacted she could have underreacted we could have underreacted you could have underreacted they could have underreacted	I could have been underreacting you could have been underreacting she could have been underreacting we could have been underreacting you could have been underreacting they could have been underreacting

Negation

Simple form	V-ing form
I couldn't underreact you couldn't underreact she couldn't underreact we couldn't underreact you couldn't underreact they couldn't underreact	I couldn't be underreacting you couldn't be underreacting she couldn't be underreacting we couldn't be underreacting you couldn't be underreacting they couldn't be underreacting
Perfect	V-ing perfect
I couldn't have underreacted you couldn't have underreacted she couldn't have underreacted we couldn't have underreacted you couldn't have underreacted they couldn't have underreacted	I couldn't have been underreacting you couldn't have been underreacting she couldn't have been underreacting we couldn't have been underreacting you couldn't have been underreacting they couldn't have been underreacting

Interrogative form

Simple form	V-ing form
could I underreact? could you underreact? could she underreact? could we underreact? could you underreact? could they underreact?	could I be underreacting? could you be underreacting? could she be underreacting? could we be underreacting? could you be underreacting? could they be underreacting?
Perfect	V-ing perfect
could I have underreacted? could you have underreacted? could she have underreacted? could we have underreacted? could you have underreacted? could they have underreacted?	could I have been underreacting? could you have been underreacting? could she have been underreacting? could we have been underreacting? could you have been underreacting? could they have been underreacting?

Interro-negative form

Simple form	V-ing form
couldn't I underreact? couldn't you underreact? couldn't she underreact? couldn't we underreact? couldn't you underreact? couldn't they underreact?	couldn't I be underreacting? couldn't you be underreacting? couldn't she be underreacting? couldn't we be underreacting? couldn't you be underreacting? couldn't they be underreacting?
Perfect	V-ing perfect
couldn't I have underreacted? couldn't you have underreacted? couldn't she have underreacted? couldn't we have underreacted? couldn't you have underreacted? couldn't they have underreacted?	couldn't I have been underreacting? couldn't you have been underreacting? couldn't she have been underreacting? couldn't we have been underreacting? couldn't you have been underreacting? couldn't they have been underreacting?