English verb conjugation
COULD COFFIN

Regular verb: coffin - coffined - coffined

Affirmation

Simple form	V-ing form
I could coffin you could coffin he could coffin we could coffin you could coffin they could coffin	I could be coffining you could be coffining he could be coffining we could be coffining you could be coffining they could be coffining
Perfect	V-ing perfect
I could have coffined you could have coffined he could have coffined we could have coffined you could have coffined they could have coffined	I could have been coffining you could have been coffining he could have been coffining we could have been coffining you could have been coffining they could have been coffining

Negation

Simple form	V-ing form
I could not coffin you could not coffin he could not coffin we could not coffin you could not coffin they could not coffin	I could not be coffining you could not be coffining he could not be coffining we could not be coffining you could not be coffining they could not be coffining
Perfect	V-ing perfect
I could not have coffined you could not have coffined he could not have coffined we could not have coffined you could not have coffined they could not have coffined	I could not have been coffining you could not have been coffining he could not have been coffining we could not have been coffining you could not have been coffining they could not have been coffining

Interrogative form

Simple form	V-ing form
could I coffin? could you coffin? could he coffin? could we coffin? could you coffin? could they coffin?	could I be coffining? could you be coffining? could he be coffining? could we be coffining? could you be coffining? could they be coffining?
Perfect	V-ing perfect
could I have coffined? could you have coffined? could he have coffined? could we have coffined? could you have coffined? could they have coffined?	could I have been coffining? could you have been coffining? could he have been coffining? could we have been coffining? could you have been coffining? could they have been coffining?

Interro-negative form

Simple form	V-ing form
could I not coffin? could you not coffin? could he not coffin? could we not coffin? could you not coffin? could they not coffin?	could I not be coffining? could you not be coffining? could he not be coffining? could we not be coffining? could you not be coffining? could they not be coffining?
Perfect	V-ing perfect
could I not have coffined? could you not have coffined? could he not have coffined? could we not have coffined? could you not have coffined? could they not have coffined?	could I not have been coffining? could you not have been coffining? could he not have been coffining? could we not have been coffining? could you not have been coffining? could they not have been coffining?