English verb conjugation
COULD LOSE

Irregular verb: lose - lost - lost

Affirmation

Simple form	V-ing form
I could lose you could lose he could lose we could lose you could lose they could lose	I could be losing you could be losing he could be losing we could be losing you could be losing they could be losing
Perfect	V-ing perfect
I could have lost you could have lost he could have lost we could have lost you could have lost they could have lost	I could have been losing you could have been losing he could have been losing we could have been losing you could have been losing they could have been losing

Negation

Simple form	V-ing form
I couldn't lose you couldn't lose he couldn't lose we couldn't lose you couldn't lose they couldn't lose	I couldn't be losing you couldn't be losing he couldn't be losing we couldn't be losing you couldn't be losing they couldn't be losing
Perfect	V-ing perfect
I couldn't have lost you couldn't have lost he couldn't have lost we couldn't have lost you couldn't have lost they couldn't have lost	I couldn't have been losing you couldn't have been losing he couldn't have been losing we couldn't have been losing you couldn't have been losing they couldn't have been losing

Interrogative form

Simple form	V-ing form
could I lose? could you lose? could he lose? could we lose? could you lose? could they lose?	could I be losing? could you be losing? could he be losing? could we be losing? could you be losing? could they be losing?
Perfect	V-ing perfect
could I have lost? could you have lost? could he have lost? could we have lost? could you have lost? could they have lost?	could I have been losing? could you have been losing? could he have been losing? could we have been losing? could you have been losing? could they have been losing?

Interro-negative form

Simple form	V-ing form
couldn't I lose? couldn't you lose? couldn't he lose? couldn't we lose? couldn't you lose? couldn't they lose?	couldn't I be losing? couldn't you be losing? couldn't he be losing? couldn't we be losing? couldn't you be losing? couldn't they be losing?
Perfect	V-ing perfect
couldn't I have lost? couldn't you have lost? couldn't he have lost? couldn't we have lost? couldn't you have lost? couldn't they have lost?	couldn't I have been losing? couldn't you have been losing? couldn't he have been losing? couldn't we have been losing? couldn't you have been losing? couldn't they have been losing?