English verb conjugation
COULD UNDEREXERCISE

Regular verb: underexercise - underexercised - underexercised

Affirmation

Simple form	V-ing form
I could underexercise you could underexercise she could underexercise we could underexercise you could underexercise they could underexercise	I could be underexercising you could be underexercising she could be underexercising we could be underexercising you could be underexercising they could be underexercising
Perfect	V-ing perfect
I could have underexercised you could have underexercised she could have underexercised we could have underexercised you could have underexercised they could have underexercised	I could have been underexercising you could have been underexercising she could have been underexercising we could have been underexercising you could have been underexercising they could have been underexercising

Negation

Simple form	V-ing form
I couldn't underexercise you couldn't underexercise she couldn't underexercise we couldn't underexercise you couldn't underexercise they couldn't underexercise	I couldn't be underexercising you couldn't be underexercising she couldn't be underexercising we couldn't be underexercising you couldn't be underexercising they couldn't be underexercising
Perfect	V-ing perfect
I couldn't have underexercised you couldn't have underexercised she couldn't have underexercised we couldn't have underexercised you couldn't have underexercised they couldn't have underexercised	I couldn't have been underexercising you couldn't have been underexercising she couldn't have been underexercising we couldn't have been underexercising you couldn't have been underexercising they couldn't have been underexercising

Interrogative form

Simple form	V-ing form
could I underexercise? could you underexercise? could she underexercise? could we underexercise? could you underexercise? could they underexercise?	could I be underexercising? could you be underexercising? could she be underexercising? could we be underexercising? could you be underexercising? could they be underexercising?
Perfect	V-ing perfect
could I have underexercised? could you have underexercised? could she have underexercised? could we have underexercised? could you have underexercised? could they have underexercised?	could I have been underexercising? could you have been underexercising? could she have been underexercising? could we have been underexercising? could you have been underexercising? could they have been underexercising?

Interro-negative form

Simple form	V-ing form
couldn't I underexercise? couldn't you underexercise? couldn't she underexercise? couldn't we underexercise? couldn't you underexercise? couldn't they underexercise?	couldn't I be underexercising? couldn't you be underexercising? couldn't she be underexercising? couldn't we be underexercising? couldn't you be underexercising? couldn't they be underexercising?
Perfect	V-ing perfect
couldn't I have underexercised? couldn't you have underexercised? couldn't she have underexercised? couldn't we have underexercised? couldn't you have underexercised? couldn't they have underexercised?	couldn't I have been underexercising? couldn't you have been underexercising? couldn't she have been underexercising? couldn't we have been underexercising? couldn't you have been underexercising? couldn't they have been underexercising?