English verb conjugation
COULD INSIST

Regular verb: insist - insisted - insisted

Affirmation

Simple form	V-ing form
I could insist you could insist he could insist we could insist you could insist they could insist	I could be insisting you could be insisting he could be insisting we could be insisting you could be insisting they could be insisting
Perfect	V-ing perfect
I could have insisted you could have insisted he could have insisted we could have insisted you could have insisted they could have insisted	I could have been insisting you could have been insisting he could have been insisting we could have been insisting you could have been insisting they could have been insisting

Negation

Simple form	V-ing form
I couldn't insist you couldn't insist he couldn't insist we couldn't insist you couldn't insist they couldn't insist	I couldn't be insisting you couldn't be insisting he couldn't be insisting we couldn't be insisting you couldn't be insisting they couldn't be insisting
Perfect	V-ing perfect
I couldn't have insisted you couldn't have insisted he couldn't have insisted we couldn't have insisted you couldn't have insisted they couldn't have insisted	I couldn't have been insisting you couldn't have been insisting he couldn't have been insisting we couldn't have been insisting you couldn't have been insisting they couldn't have been insisting

Interrogative form

Simple form	V-ing form
could I insist? could you insist? could he insist? could we insist? could you insist? could they insist?	could I be insisting? could you be insisting? could he be insisting? could we be insisting? could you be insisting? could they be insisting?
Perfect	V-ing perfect
could I have insisted? could you have insisted? could he have insisted? could we have insisted? could you have insisted? could they have insisted?	could I have been insisting? could you have been insisting? could he have been insisting? could we have been insisting? could you have been insisting? could they have been insisting?

Interro-negative form

Simple form	V-ing form
couldn't I insist? couldn't you insist? couldn't he insist? couldn't we insist? couldn't you insist? couldn't they insist?	couldn't I be insisting? couldn't you be insisting? couldn't he be insisting? couldn't we be insisting? couldn't you be insisting? couldn't they be insisting?
Perfect	V-ing perfect
couldn't I have insisted? couldn't you have insisted? couldn't he have insisted? couldn't we have insisted? couldn't you have insisted? couldn't they have insisted?	couldn't I have been insisting? couldn't you have been insisting? couldn't he have been insisting? couldn't we have been insisting? couldn't you have been insisting? couldn't they have been insisting?