English verb conjugation
COULD LINE

Regular verb: line - lined - lined

Affirmation

Simple form	V-ing form
I could line you could line he could line we could line you could line they could line	I could be lining you could be lining he could be lining we could be lining you could be lining they could be lining
Perfect	V-ing perfect
I could have lined you could have lined he could have lined we could have lined you could have lined they could have lined	I could have been lining you could have been lining he could have been lining we could have been lining you could have been lining they could have been lining

Negation

Simple form	V-ing form
I couldn't line you couldn't line he couldn't line we couldn't line you couldn't line they couldn't line	I couldn't be lining you couldn't be lining he couldn't be lining we couldn't be lining you couldn't be lining they couldn't be lining
Perfect	V-ing perfect
I couldn't have lined you couldn't have lined he couldn't have lined we couldn't have lined you couldn't have lined they couldn't have lined	I couldn't have been lining you couldn't have been lining he couldn't have been lining we couldn't have been lining you couldn't have been lining they couldn't have been lining

Interrogative form

Simple form	V-ing form
could I line? could you line? could he line? could we line? could you line? could they line?	could I be lining? could you be lining? could he be lining? could we be lining? could you be lining? could they be lining?
Perfect	V-ing perfect
could I have lined? could you have lined? could he have lined? could we have lined? could you have lined? could they have lined?	could I have been lining? could you have been lining? could he have been lining? could we have been lining? could you have been lining? could they have been lining?

Interro-negative form

Simple form	V-ing form
couldn't I line? couldn't you line? couldn't he line? couldn't we line? couldn't you line? couldn't they line?	couldn't I be lining? couldn't you be lining? couldn't he be lining? couldn't we be lining? couldn't you be lining? couldn't they be lining?
Perfect	V-ing perfect
couldn't I have lined? couldn't you have lined? couldn't he have lined? couldn't we have lined? couldn't you have lined? couldn't they have lined?	couldn't I have been lining? couldn't you have been lining? couldn't he have been lining? couldn't we have been lining? couldn't you have been lining? couldn't they have been lining?