English verb conjugation
COULD WORM

Regular verb: worm - wormed - wormed

Affirmation

Simple form	V-ing form
I could worm you could worm he could worm we could worm you could worm they could worm	I could be worming you could be worming he could be worming we could be worming you could be worming they could be worming
Perfect	V-ing perfect
I could have wormed you could have wormed he could have wormed we could have wormed you could have wormed they could have wormed	I could have been worming you could have been worming he could have been worming we could have been worming you could have been worming they could have been worming

Negation

Simple form	V-ing form
I could not worm you could not worm he could not worm we could not worm you could not worm they could not worm	I could not be worming you could not be worming he could not be worming we could not be worming you could not be worming they could not be worming
Perfect	V-ing perfect
I could not have wormed you could not have wormed he could not have wormed we could not have wormed you could not have wormed they could not have wormed	I could not have been worming you could not have been worming he could not have been worming we could not have been worming you could not have been worming they could not have been worming

Interrogative form

Simple form	V-ing form
could I worm? could you worm? could he worm? could we worm? could you worm? could they worm?	could I be worming? could you be worming? could he be worming? could we be worming? could you be worming? could they be worming?
Perfect	V-ing perfect
could I have wormed? could you have wormed? could he have wormed? could we have wormed? could you have wormed? could they have wormed?	could I have been worming? could you have been worming? could he have been worming? could we have been worming? could you have been worming? could they have been worming?

Interro-negative form

Simple form	V-ing form
could I not worm? could you not worm? could he not worm? could we not worm? could you not worm? could they not worm?	could I not be worming? could you not be worming? could he not be worming? could we not be worming? could you not be worming? could they not be worming?
Perfect	V-ing perfect
could I not have wormed? could you not have wormed? could he not have wormed? could we not have wormed? could you not have wormed? could they not have wormed?	could I not have been worming? could you not have been worming? could he not have been worming? could we not have been worming? could you not have been worming? could they not have been worming?