English verb conjugation
COULD POSTULATE

Regular verb: postulate - postulated - postulated

Affirmation

Simple form	V-ing form
I could postulate you could postulate he could postulate we could postulate you could postulate they could postulate	I could be postulating you could be postulating he could be postulating we could be postulating you could be postulating they could be postulating
Perfect	V-ing perfect
I could have postulated you could have postulated he could have postulated we could have postulated you could have postulated they could have postulated	I could have been postulating you could have been postulating he could have been postulating we could have been postulating you could have been postulating they could have been postulating

Negation

Simple form	V-ing form
I could not postulate you could not postulate he could not postulate we could not postulate you could not postulate they could not postulate	I could not be postulating you could not be postulating he could not be postulating we could not be postulating you could not be postulating they could not be postulating
Perfect	V-ing perfect
I could not have postulated you could not have postulated he could not have postulated we could not have postulated you could not have postulated they could not have postulated	I could not have been postulating you could not have been postulating he could not have been postulating we could not have been postulating you could not have been postulating they could not have been postulating

Interrogative form

Simple form	V-ing form
could I postulate? could you postulate? could he postulate? could we postulate? could you postulate? could they postulate?	could I be postulating? could you be postulating? could he be postulating? could we be postulating? could you be postulating? could they be postulating?
Perfect	V-ing perfect
could I have postulated? could you have postulated? could he have postulated? could we have postulated? could you have postulated? could they have postulated?	could I have been postulating? could you have been postulating? could he have been postulating? could we have been postulating? could you have been postulating? could they have been postulating?

Interro-negative form

Simple form	V-ing form
could I not postulate? could you not postulate? could he not postulate? could we not postulate? could you not postulate? could they not postulate?	could I not be postulating? could you not be postulating? could he not be postulating? could we not be postulating? could you not be postulating? could they not be postulating?
Perfect	V-ing perfect
could I not have postulated? could you not have postulated? could he not have postulated? could we not have postulated? could you not have postulated? could they not have postulated?	could I not have been postulating? could you not have been postulating? could he not have been postulating? could we not have been postulating? could you not have been postulating? could they not have been postulating?