English verb conjugation
COULD LOOP

Regular verb: loop - looped - looped

Affirmation

Simple form	V-ing form
I could loop you could loop she could loop we could loop you could loop they could loop	I could be looping you could be looping she could be looping we could be looping you could be looping they could be looping
Perfect	V-ing perfect
I could have looped you could have looped she could have looped we could have looped you could have looped they could have looped	I could have been looping you could have been looping she could have been looping we could have been looping you could have been looping they could have been looping

Negation

Simple form	V-ing form
I could not loop you could not loop she could not loop we could not loop you could not loop they could not loop	I could not be looping you could not be looping she could not be looping we could not be looping you could not be looping they could not be looping
Perfect	V-ing perfect
I could not have looped you could not have looped she could not have looped we could not have looped you could not have looped they could not have looped	I could not have been looping you could not have been looping she could not have been looping we could not have been looping you could not have been looping they could not have been looping

Interrogative form

Simple form	V-ing form
could I loop? could you loop? could she loop? could we loop? could you loop? could they loop?	could I be looping? could you be looping? could she be looping? could we be looping? could you be looping? could they be looping?
Perfect	V-ing perfect
could I have looped? could you have looped? could she have looped? could we have looped? could you have looped? could they have looped?	could I have been looping? could you have been looping? could she have been looping? could we have been looping? could you have been looping? could they have been looping?

Interro-negative form

Simple form	V-ing form
could I not loop? could you not loop? could she not loop? could we not loop? could you not loop? could they not loop?	could I not be looping? could you not be looping? could she not be looping? could we not be looping? could you not be looping? could they not be looping?
Perfect	V-ing perfect
could I not have looped? could you not have looped? could she not have looped? could we not have looped? could you not have looped? could they not have looped?	could I not have been looping? could you not have been looping? could she not have been looping? could we not have been looping? could you not have been looping? could they not have been looping?