English verb conjugation
COULD AX

Regular verb: ax - axed - axed

Affirmation

Simple form	V-ing form
I could ax you could ax he could ax we could ax you could ax they could ax	I could be axing you could be axing he could be axing we could be axing you could be axing they could be axing
Perfect	V-ing perfect
I could have axed you could have axed he could have axed we could have axed you could have axed they could have axed	I could have been axing you could have been axing he could have been axing we could have been axing you could have been axing they could have been axing

Negation

Simple form	V-ing form
I couldn't ax you couldn't ax he couldn't ax we couldn't ax you couldn't ax they couldn't ax	I couldn't be axing you couldn't be axing he couldn't be axing we couldn't be axing you couldn't be axing they couldn't be axing
Perfect	V-ing perfect
I couldn't have axed you couldn't have axed he couldn't have axed we couldn't have axed you couldn't have axed they couldn't have axed	I couldn't have been axing you couldn't have been axing he couldn't have been axing we couldn't have been axing you couldn't have been axing they couldn't have been axing

Interrogative form

Simple form	V-ing form
could I ax? could you ax? could he ax? could we ax? could you ax? could they ax?	could I be axing? could you be axing? could he be axing? could we be axing? could you be axing? could they be axing?
Perfect	V-ing perfect
could I have axed? could you have axed? could he have axed? could we have axed? could you have axed? could they have axed?	could I have been axing? could you have been axing? could he have been axing? could we have been axing? could you have been axing? could they have been axing?

Interro-negative form

Simple form	V-ing form
couldn't I ax? couldn't you ax? couldn't he ax? couldn't we ax? couldn't you ax? couldn't they ax?	couldn't I be axing? couldn't you be axing? couldn't he be axing? couldn't we be axing? couldn't you be axing? couldn't they be axing?
Perfect	V-ing perfect
couldn't I have axed? couldn't you have axed? couldn't he have axed? couldn't we have axed? couldn't you have axed? couldn't they have axed?	couldn't I have been axing? couldn't you have been axing? couldn't he have been axing? couldn't we have been axing? couldn't you have been axing? couldn't they have been axing?