English verb conjugation
COULD MARGIN

Regular verb: margin - margined - margined

Affirmation

Simple form	V-ing form
I could margin you could margin she could margin we could margin you could margin they could margin	I could be margining you could be margining she could be margining we could be margining you could be margining they could be margining
Perfect	V-ing perfect
I could have margined you could have margined she could have margined we could have margined you could have margined they could have margined	I could have been margining you could have been margining she could have been margining we could have been margining you could have been margining they could have been margining

Negation

Simple form	V-ing form
I couldn't margin you couldn't margin she couldn't margin we couldn't margin you couldn't margin they couldn't margin	I couldn't be margining you couldn't be margining she couldn't be margining we couldn't be margining you couldn't be margining they couldn't be margining
Perfect	V-ing perfect
I couldn't have margined you couldn't have margined she couldn't have margined we couldn't have margined you couldn't have margined they couldn't have margined	I couldn't have been margining you couldn't have been margining she couldn't have been margining we couldn't have been margining you couldn't have been margining they couldn't have been margining

Interrogative form

Simple form	V-ing form
could I margin? could you margin? could she margin? could we margin? could you margin? could they margin?	could I be margining? could you be margining? could she be margining? could we be margining? could you be margining? could they be margining?
Perfect	V-ing perfect
could I have margined? could you have margined? could she have margined? could we have margined? could you have margined? could they have margined?	could I have been margining? could you have been margining? could she have been margining? could we have been margining? could you have been margining? could they have been margining?

Interro-negative form

Simple form	V-ing form
couldn't I margin? couldn't you margin? couldn't she margin? couldn't we margin? couldn't you margin? couldn't they margin?	couldn't I be margining? couldn't you be margining? couldn't she be margining? couldn't we be margining? couldn't you be margining? couldn't they be margining?
Perfect	V-ing perfect
couldn't I have margined? couldn't you have margined? couldn't she have margined? couldn't we have margined? couldn't you have margined? couldn't they have margined?	couldn't I have been margining? couldn't you have been margining? couldn't she have been margining? couldn't we have been margining? couldn't you have been margining? couldn't they have been margining?