English verb conjugation
COULD SYMMETRIZE

Regular verb: symmetrize - symmetrized - symmetrized

Affirmation

Simple form	V-ing form
I could symmetrize you could symmetrize she could symmetrize we could symmetrize you could symmetrize they could symmetrize	I could be symmetrizing you could be symmetrizing she could be symmetrizing we could be symmetrizing you could be symmetrizing they could be symmetrizing
Perfect	V-ing perfect
I could have symmetrized you could have symmetrized she could have symmetrized we could have symmetrized you could have symmetrized they could have symmetrized	I could have been symmetrizing you could have been symmetrizing she could have been symmetrizing we could have been symmetrizing you could have been symmetrizing they could have been symmetrizing

Negation

Simple form	V-ing form
I could not symmetrize you could not symmetrize she could not symmetrize we could not symmetrize you could not symmetrize they could not symmetrize	I could not be symmetrizing you could not be symmetrizing she could not be symmetrizing we could not be symmetrizing you could not be symmetrizing they could not be symmetrizing
Perfect	V-ing perfect
I could not have symmetrized you could not have symmetrized she could not have symmetrized we could not have symmetrized you could not have symmetrized they could not have symmetrized	I could not have been symmetrizing you could not have been symmetrizing she could not have been symmetrizing we could not have been symmetrizing you could not have been symmetrizing they could not have been symmetrizing

Interrogative form

Simple form	V-ing form
could I symmetrize? could you symmetrize? could she symmetrize? could we symmetrize? could you symmetrize? could they symmetrize?	could I be symmetrizing? could you be symmetrizing? could she be symmetrizing? could we be symmetrizing? could you be symmetrizing? could they be symmetrizing?
Perfect	V-ing perfect
could I have symmetrized? could you have symmetrized? could she have symmetrized? could we have symmetrized? could you have symmetrized? could they have symmetrized?	could I have been symmetrizing? could you have been symmetrizing? could she have been symmetrizing? could we have been symmetrizing? could you have been symmetrizing? could they have been symmetrizing?

Interro-negative form

Simple form	V-ing form
could I not symmetrize? could you not symmetrize? could she not symmetrize? could we not symmetrize? could you not symmetrize? could they not symmetrize?	could I not be symmetrizing? could you not be symmetrizing? could she not be symmetrizing? could we not be symmetrizing? could you not be symmetrizing? could they not be symmetrizing?
Perfect	V-ing perfect
could I not have symmetrized? could you not have symmetrized? could she not have symmetrized? could we not have symmetrized? could you not have symmetrized? could they not have symmetrized?	could I not have been symmetrizing? could you not have been symmetrizing? could she not have been symmetrizing? could we not have been symmetrizing? could you not have been symmetrizing? could they not have been symmetrizing?