English verb conjugation
COULD PEPTIZE

Regular verb: peptize - peptized - peptized

Affirmation

Simple form	V-ing form
I could peptize you could peptize he could peptize we could peptize you could peptize they could peptize	I could be peptizing you could be peptizing he could be peptizing we could be peptizing you could be peptizing they could be peptizing
Perfect	V-ing perfect
I could have peptized you could have peptized he could have peptized we could have peptized you could have peptized they could have peptized	I could have been peptizing you could have been peptizing he could have been peptizing we could have been peptizing you could have been peptizing they could have been peptizing

Negation

Simple form	V-ing form
I couldn't peptize you couldn't peptize he couldn't peptize we couldn't peptize you couldn't peptize they couldn't peptize	I couldn't be peptizing you couldn't be peptizing he couldn't be peptizing we couldn't be peptizing you couldn't be peptizing they couldn't be peptizing
Perfect	V-ing perfect
I couldn't have peptized you couldn't have peptized he couldn't have peptized we couldn't have peptized you couldn't have peptized they couldn't have peptized	I couldn't have been peptizing you couldn't have been peptizing he couldn't have been peptizing we couldn't have been peptizing you couldn't have been peptizing they couldn't have been peptizing

Interrogative form

Simple form	V-ing form
could I peptize? could you peptize? could he peptize? could we peptize? could you peptize? could they peptize?	could I be peptizing? could you be peptizing? could he be peptizing? could we be peptizing? could you be peptizing? could they be peptizing?
Perfect	V-ing perfect
could I have peptized? could you have peptized? could he have peptized? could we have peptized? could you have peptized? could they have peptized?	could I have been peptizing? could you have been peptizing? could he have been peptizing? could we have been peptizing? could you have been peptizing? could they have been peptizing?

Interro-negative form

Simple form	V-ing form
couldn't I peptize? couldn't you peptize? couldn't he peptize? couldn't we peptize? couldn't you peptize? couldn't they peptize?	couldn't I be peptizing? couldn't you be peptizing? couldn't he be peptizing? couldn't we be peptizing? couldn't you be peptizing? couldn't they be peptizing?
Perfect	V-ing perfect
couldn't I have peptized? couldn't you have peptized? couldn't he have peptized? couldn't we have peptized? couldn't you have peptized? couldn't they have peptized?	couldn't I have been peptizing? couldn't you have been peptizing? couldn't he have been peptizing? couldn't we have been peptizing? couldn't you have been peptizing? couldn't they have been peptizing?