English verb conjugation
COULD DEMAGNETIZE

Regular verb: demagnetize - demagnetized - demagnetized

Affirmation

Simple form	V-ing form
I could demagnetize you could demagnetize he could demagnetize we could demagnetize you could demagnetize they could demagnetize	I could be demagnetizing you could be demagnetizing he could be demagnetizing we could be demagnetizing you could be demagnetizing they could be demagnetizing
Perfect	V-ing perfect
I could have demagnetized you could have demagnetized he could have demagnetized we could have demagnetized you could have demagnetized they could have demagnetized	I could have been demagnetizing you could have been demagnetizing he could have been demagnetizing we could have been demagnetizing you could have been demagnetizing they could have been demagnetizing

Negation

Simple form	V-ing form
I couldn't demagnetize you couldn't demagnetize he couldn't demagnetize we couldn't demagnetize you couldn't demagnetize they couldn't demagnetize	I couldn't be demagnetizing you couldn't be demagnetizing he couldn't be demagnetizing we couldn't be demagnetizing you couldn't be demagnetizing they couldn't be demagnetizing
Perfect	V-ing perfect
I couldn't have demagnetized you couldn't have demagnetized he couldn't have demagnetized we couldn't have demagnetized you couldn't have demagnetized they couldn't have demagnetized	I couldn't have been demagnetizing you couldn't have been demagnetizing he couldn't have been demagnetizing we couldn't have been demagnetizing you couldn't have been demagnetizing they couldn't have been demagnetizing

Interrogative form

Simple form	V-ing form
could I demagnetize? could you demagnetize? could he demagnetize? could we demagnetize? could you demagnetize? could they demagnetize?	could I be demagnetizing? could you be demagnetizing? could he be demagnetizing? could we be demagnetizing? could you be demagnetizing? could they be demagnetizing?
Perfect	V-ing perfect
could I have demagnetized? could you have demagnetized? could he have demagnetized? could we have demagnetized? could you have demagnetized? could they have demagnetized?	could I have been demagnetizing? could you have been demagnetizing? could he have been demagnetizing? could we have been demagnetizing? could you have been demagnetizing? could they have been demagnetizing?

Interro-negative form

Simple form	V-ing form
couldn't I demagnetize? couldn't you demagnetize? couldn't he demagnetize? couldn't we demagnetize? couldn't you demagnetize? couldn't they demagnetize?	couldn't I be demagnetizing? couldn't you be demagnetizing? couldn't he be demagnetizing? couldn't we be demagnetizing? couldn't you be demagnetizing? couldn't they be demagnetizing?
Perfect	V-ing perfect
couldn't I have demagnetized? couldn't you have demagnetized? couldn't he have demagnetized? couldn't we have demagnetized? couldn't you have demagnetized? couldn't they have demagnetized?	couldn't I have been demagnetizing? couldn't you have been demagnetizing? couldn't he have been demagnetizing? couldn't we have been demagnetizing? couldn't you have been demagnetizing? couldn't they have been demagnetizing?