English verb conjugation
COULD WEIGH

Regular verb: weigh - weighed - weighed

Affirmation

Simple form	V-ing form
I could weigh you could weigh she could weigh we could weigh you could weigh they could weigh	I could be weighing you could be weighing she could be weighing we could be weighing you could be weighing they could be weighing
Perfect	V-ing perfect
I could have weighed you could have weighed she could have weighed we could have weighed you could have weighed they could have weighed	I could have been weighing you could have been weighing she could have been weighing we could have been weighing you could have been weighing they could have been weighing

Negation

Simple form	V-ing form
I couldn't weigh you couldn't weigh she couldn't weigh we couldn't weigh you couldn't weigh they couldn't weigh	I couldn't be weighing you couldn't be weighing she couldn't be weighing we couldn't be weighing you couldn't be weighing they couldn't be weighing
Perfect	V-ing perfect
I couldn't have weighed you couldn't have weighed she couldn't have weighed we couldn't have weighed you couldn't have weighed they couldn't have weighed	I couldn't have been weighing you couldn't have been weighing she couldn't have been weighing we couldn't have been weighing you couldn't have been weighing they couldn't have been weighing

Interrogative form

Simple form	V-ing form
could I weigh? could you weigh? could she weigh? could we weigh? could you weigh? could they weigh?	could I be weighing? could you be weighing? could she be weighing? could we be weighing? could you be weighing? could they be weighing?
Perfect	V-ing perfect
could I have weighed? could you have weighed? could she have weighed? could we have weighed? could you have weighed? could they have weighed?	could I have been weighing? could you have been weighing? could she have been weighing? could we have been weighing? could you have been weighing? could they have been weighing?

Interro-negative form

Simple form	V-ing form
couldn't I weigh? couldn't you weigh? couldn't she weigh? couldn't we weigh? couldn't you weigh? couldn't they weigh?	couldn't I be weighing? couldn't you be weighing? couldn't she be weighing? couldn't we be weighing? couldn't you be weighing? couldn't they be weighing?
Perfect	V-ing perfect
couldn't I have weighed? couldn't you have weighed? couldn't she have weighed? couldn't we have weighed? couldn't you have weighed? couldn't they have weighed?	couldn't I have been weighing? couldn't you have been weighing? couldn't she have been weighing? couldn't we have been weighing? couldn't you have been weighing? couldn't they have been weighing?