English verb conjugation
COULD IODIZE

Regular verb: iodize - iodized - iodized

Affirmation

Simple form	V-ing form
I could iodize you could iodize he could iodize we could iodize you could iodize they could iodize	I could be iodizing you could be iodizing he could be iodizing we could be iodizing you could be iodizing they could be iodizing
Perfect	V-ing perfect
I could have iodized you could have iodized he could have iodized we could have iodized you could have iodized they could have iodized	I could have been iodizing you could have been iodizing he could have been iodizing we could have been iodizing you could have been iodizing they could have been iodizing

Negation

Simple form	V-ing form
I couldn't iodize you couldn't iodize he couldn't iodize we couldn't iodize you couldn't iodize they couldn't iodize	I couldn't be iodizing you couldn't be iodizing he couldn't be iodizing we couldn't be iodizing you couldn't be iodizing they couldn't be iodizing
Perfect	V-ing perfect
I couldn't have iodized you couldn't have iodized he couldn't have iodized we couldn't have iodized you couldn't have iodized they couldn't have iodized	I couldn't have been iodizing you couldn't have been iodizing he couldn't have been iodizing we couldn't have been iodizing you couldn't have been iodizing they couldn't have been iodizing

Interrogative form

Simple form	V-ing form
could I iodize? could you iodize? could he iodize? could we iodize? could you iodize? could they iodize?	could I be iodizing? could you be iodizing? could he be iodizing? could we be iodizing? could you be iodizing? could they be iodizing?
Perfect	V-ing perfect
could I have iodized? could you have iodized? could he have iodized? could we have iodized? could you have iodized? could they have iodized?	could I have been iodizing? could you have been iodizing? could he have been iodizing? could we have been iodizing? could you have been iodizing? could they have been iodizing?

Interro-negative form

Simple form	V-ing form
couldn't I iodize? couldn't you iodize? couldn't he iodize? couldn't we iodize? couldn't you iodize? couldn't they iodize?	couldn't I be iodizing? couldn't you be iodizing? couldn't he be iodizing? couldn't we be iodizing? couldn't you be iodizing? couldn't they be iodizing?
Perfect	V-ing perfect
couldn't I have iodized? couldn't you have iodized? couldn't he have iodized? couldn't we have iodized? couldn't you have iodized? couldn't they have iodized?	couldn't I have been iodizing? couldn't you have been iodizing? couldn't he have been iodizing? couldn't we have been iodizing? couldn't you have been iodizing? couldn't they have been iodizing?