English verb conjugation
COULD THEORIZE

Regular verb: theorize - theorized - theorized

Affirmation

Simple form	V-ing form
I could theorize you could theorize he could theorize we could theorize you could theorize they could theorize	I could be theorizing you could be theorizing he could be theorizing we could be theorizing you could be theorizing they could be theorizing
Perfect	V-ing perfect
I could have theorized you could have theorized he could have theorized we could have theorized you could have theorized they could have theorized	I could have been theorizing you could have been theorizing he could have been theorizing we could have been theorizing you could have been theorizing they could have been theorizing

Negation

Simple form	V-ing form
I could not theorize you could not theorize he could not theorize we could not theorize you could not theorize they could not theorize	I could not be theorizing you could not be theorizing he could not be theorizing we could not be theorizing you could not be theorizing they could not be theorizing
Perfect	V-ing perfect
I could not have theorized you could not have theorized he could not have theorized we could not have theorized you could not have theorized they could not have theorized	I could not have been theorizing you could not have been theorizing he could not have been theorizing we could not have been theorizing you could not have been theorizing they could not have been theorizing

Interrogative form

Simple form	V-ing form
could I theorize? could you theorize? could he theorize? could we theorize? could you theorize? could they theorize?	could I be theorizing? could you be theorizing? could he be theorizing? could we be theorizing? could you be theorizing? could they be theorizing?
Perfect	V-ing perfect
could I have theorized? could you have theorized? could he have theorized? could we have theorized? could you have theorized? could they have theorized?	could I have been theorizing? could you have been theorizing? could he have been theorizing? could we have been theorizing? could you have been theorizing? could they have been theorizing?

Interro-negative form

Simple form	V-ing form
could I not theorize? could you not theorize? could he not theorize? could we not theorize? could you not theorize? could they not theorize?	could I not be theorizing? could you not be theorizing? could he not be theorizing? could we not be theorizing? could you not be theorizing? could they not be theorizing?
Perfect	V-ing perfect
could I not have theorized? could you not have theorized? could he not have theorized? could we not have theorized? could you not have theorized? could they not have theorized?	could I not have been theorizing? could you not have been theorizing? could he not have been theorizing? could we not have been theorizing? could you not have been theorizing? could they not have been theorizing?