English verb conjugation
COULD CARBONIZE

Regular verb: carbonize - carbonized - carbonized

Affirmation

Simple form	V-ing form
I could carbonize you could carbonize he could carbonize we could carbonize you could carbonize they could carbonize	I could be carbonizing you could be carbonizing he could be carbonizing we could be carbonizing you could be carbonizing they could be carbonizing
Perfect	V-ing perfect
I could have carbonized you could have carbonized he could have carbonized we could have carbonized you could have carbonized they could have carbonized	I could have been carbonizing you could have been carbonizing he could have been carbonizing we could have been carbonizing you could have been carbonizing they could have been carbonizing

Negation

Simple form	V-ing form
I could not carbonize you could not carbonize he could not carbonize we could not carbonize you could not carbonize they could not carbonize	I could not be carbonizing you could not be carbonizing he could not be carbonizing we could not be carbonizing you could not be carbonizing they could not be carbonizing
Perfect	V-ing perfect
I could not have carbonized you could not have carbonized he could not have carbonized we could not have carbonized you could not have carbonized they could not have carbonized	I could not have been carbonizing you could not have been carbonizing he could not have been carbonizing we could not have been carbonizing you could not have been carbonizing they could not have been carbonizing

Interrogative form

Simple form	V-ing form
could I carbonize? could you carbonize? could he carbonize? could we carbonize? could you carbonize? could they carbonize?	could I be carbonizing? could you be carbonizing? could he be carbonizing? could we be carbonizing? could you be carbonizing? could they be carbonizing?
Perfect	V-ing perfect
could I have carbonized? could you have carbonized? could he have carbonized? could we have carbonized? could you have carbonized? could they have carbonized?	could I have been carbonizing? could you have been carbonizing? could he have been carbonizing? could we have been carbonizing? could you have been carbonizing? could they have been carbonizing?

Interro-negative form

Simple form	V-ing form
could I not carbonize? could you not carbonize? could he not carbonize? could we not carbonize? could you not carbonize? could they not carbonize?	could I not be carbonizing? could you not be carbonizing? could he not be carbonizing? could we not be carbonizing? could you not be carbonizing? could they not be carbonizing?
Perfect	V-ing perfect
could I not have carbonized? could you not have carbonized? could he not have carbonized? could we not have carbonized? could you not have carbonized? could they not have carbonized?	could I not have been carbonizing? could you not have been carbonizing? could he not have been carbonizing? could we not have been carbonizing? could you not have been carbonizing? could they not have been carbonizing?