English verb conjugation
COULD NILL

Regular verb: nill - nilled - nilled

Affirmation

Simple form	V-ing form
I could nill you could nill he could nill we could nill you could nill they could nill	I could be nilling you could be nilling he could be nilling we could be nilling you could be nilling they could be nilling
Perfect	V-ing perfect
I could have nilled you could have nilled he could have nilled we could have nilled you could have nilled they could have nilled	I could have been nilling you could have been nilling he could have been nilling we could have been nilling you could have been nilling they could have been nilling

Negation

Simple form	V-ing form
I couldn't nill you couldn't nill he couldn't nill we couldn't nill you couldn't nill they couldn't nill	I couldn't be nilling you couldn't be nilling he couldn't be nilling we couldn't be nilling you couldn't be nilling they couldn't be nilling
Perfect	V-ing perfect
I couldn't have nilled you couldn't have nilled he couldn't have nilled we couldn't have nilled you couldn't have nilled they couldn't have nilled	I couldn't have been nilling you couldn't have been nilling he couldn't have been nilling we couldn't have been nilling you couldn't have been nilling they couldn't have been nilling

Interrogative form

Simple form	V-ing form
could I nill? could you nill? could he nill? could we nill? could you nill? could they nill?	could I be nilling? could you be nilling? could he be nilling? could we be nilling? could you be nilling? could they be nilling?
Perfect	V-ing perfect
could I have nilled? could you have nilled? could he have nilled? could we have nilled? could you have nilled? could they have nilled?	could I have been nilling? could you have been nilling? could he have been nilling? could we have been nilling? could you have been nilling? could they have been nilling?

Interro-negative form

Simple form	V-ing form
couldn't I nill? couldn't you nill? couldn't he nill? couldn't we nill? couldn't you nill? couldn't they nill?	couldn't I be nilling? couldn't you be nilling? couldn't he be nilling? couldn't we be nilling? couldn't you be nilling? couldn't they be nilling?
Perfect	V-ing perfect
couldn't I have nilled? couldn't you have nilled? couldn't he have nilled? couldn't we have nilled? couldn't you have nilled? couldn't they have nilled?	couldn't I have been nilling? couldn't you have been nilling? couldn't he have been nilling? couldn't we have been nilling? couldn't you have been nilling? couldn't they have been nilling?