English verb conjugation
COULD COIN

Regular verb: coin - coined - coined

Affirmation

Simple form	V-ing form
I could coin you could coin he could coin we could coin you could coin they could coin	I could be coining you could be coining he could be coining we could be coining you could be coining they could be coining
Perfect	V-ing perfect
I could have coined you could have coined he could have coined we could have coined you could have coined they could have coined	I could have been coining you could have been coining he could have been coining we could have been coining you could have been coining they could have been coining

Negation

Simple form	V-ing form
I could not coin you could not coin he could not coin we could not coin you could not coin they could not coin	I could not be coining you could not be coining he could not be coining we could not be coining you could not be coining they could not be coining
Perfect	V-ing perfect
I could not have coined you could not have coined he could not have coined we could not have coined you could not have coined they could not have coined	I could not have been coining you could not have been coining he could not have been coining we could not have been coining you could not have been coining they could not have been coining

Interrogative form

Simple form	V-ing form
could I coin? could you coin? could he coin? could we coin? could you coin? could they coin?	could I be coining? could you be coining? could he be coining? could we be coining? could you be coining? could they be coining?
Perfect	V-ing perfect
could I have coined? could you have coined? could he have coined? could we have coined? could you have coined? could they have coined?	could I have been coining? could you have been coining? could he have been coining? could we have been coining? could you have been coining? could they have been coining?

Interro-negative form

Simple form	V-ing form
could I not coin? could you not coin? could he not coin? could we not coin? could you not coin? could they not coin?	could I not be coining? could you not be coining? could he not be coining? could we not be coining? could you not be coining? could they not be coining?
Perfect	V-ing perfect
could I not have coined? could you not have coined? could he not have coined? could we not have coined? could you not have coined? could they not have coined?	could I not have been coining? could you not have been coining? could he not have been coining? could we not have been coining? could you not have been coining? could they not have been coining?