English verb conjugation
COULD LUTE

Regular verb: lute - luted - luted

Affirmation

Simple form	V-ing form
I could lute you could lute he could lute we could lute you could lute they could lute	I could be luting you could be luting he could be luting we could be luting you could be luting they could be luting
Perfect	V-ing perfect
I could have luted you could have luted he could have luted we could have luted you could have luted they could have luted	I could have been luting you could have been luting he could have been luting we could have been luting you could have been luting they could have been luting

Negation

Simple form	V-ing form
I couldn't lute you couldn't lute he couldn't lute we couldn't lute you couldn't lute they couldn't lute	I couldn't be luting you couldn't be luting he couldn't be luting we couldn't be luting you couldn't be luting they couldn't be luting
Perfect	V-ing perfect
I couldn't have luted you couldn't have luted he couldn't have luted we couldn't have luted you couldn't have luted they couldn't have luted	I couldn't have been luting you couldn't have been luting he couldn't have been luting we couldn't have been luting you couldn't have been luting they couldn't have been luting

Interrogative form

Simple form	V-ing form
could I lute? could you lute? could he lute? could we lute? could you lute? could they lute?	could I be luting? could you be luting? could he be luting? could we be luting? could you be luting? could they be luting?
Perfect	V-ing perfect
could I have luted? could you have luted? could he have luted? could we have luted? could you have luted? could they have luted?	could I have been luting? could you have been luting? could he have been luting? could we have been luting? could you have been luting? could they have been luting?

Interro-negative form

Simple form	V-ing form
couldn't I lute? couldn't you lute? couldn't he lute? couldn't we lute? couldn't you lute? couldn't they lute?	couldn't I be luting? couldn't you be luting? couldn't he be luting? couldn't we be luting? couldn't you be luting? couldn't they be luting?
Perfect	V-ing perfect
couldn't I have luted? couldn't you have luted? couldn't he have luted? couldn't we have luted? couldn't you have luted? couldn't they have luted?	couldn't I have been luting? couldn't you have been luting? couldn't he have been luting? couldn't we have been luting? couldn't you have been luting? couldn't they have been luting?