English verb conjugation
COULD OPTIMIZE

Regular verb: optimize - optimized - optimized

Affirmation

Simple form	V-ing form
I could optimize you could optimize he could optimize we could optimize you could optimize they could optimize	I could be optimizing you could be optimizing he could be optimizing we could be optimizing you could be optimizing they could be optimizing
Perfect	V-ing perfect
I could have optimized you could have optimized he could have optimized we could have optimized you could have optimized they could have optimized	I could have been optimizing you could have been optimizing he could have been optimizing we could have been optimizing you could have been optimizing they could have been optimizing

Negation

Simple form	V-ing form
I couldn't optimize you couldn't optimize he couldn't optimize we couldn't optimize you couldn't optimize they couldn't optimize	I couldn't be optimizing you couldn't be optimizing he couldn't be optimizing we couldn't be optimizing you couldn't be optimizing they couldn't be optimizing
Perfect	V-ing perfect
I couldn't have optimized you couldn't have optimized he couldn't have optimized we couldn't have optimized you couldn't have optimized they couldn't have optimized	I couldn't have been optimizing you couldn't have been optimizing he couldn't have been optimizing we couldn't have been optimizing you couldn't have been optimizing they couldn't have been optimizing

Interrogative form

Simple form	V-ing form
could I optimize? could you optimize? could he optimize? could we optimize? could you optimize? could they optimize?	could I be optimizing? could you be optimizing? could he be optimizing? could we be optimizing? could you be optimizing? could they be optimizing?
Perfect	V-ing perfect
could I have optimized? could you have optimized? could he have optimized? could we have optimized? could you have optimized? could they have optimized?	could I have been optimizing? could you have been optimizing? could he have been optimizing? could we have been optimizing? could you have been optimizing? could they have been optimizing?

Interro-negative form

Simple form	V-ing form
couldn't I optimize? couldn't you optimize? couldn't he optimize? couldn't we optimize? couldn't you optimize? couldn't they optimize?	couldn't I be optimizing? couldn't you be optimizing? couldn't he be optimizing? couldn't we be optimizing? couldn't you be optimizing? couldn't they be optimizing?
Perfect	V-ing perfect
couldn't I have optimized? couldn't you have optimized? couldn't he have optimized? couldn't we have optimized? couldn't you have optimized? couldn't they have optimized?	couldn't I have been optimizing? couldn't you have been optimizing? couldn't he have been optimizing? couldn't we have been optimizing? couldn't you have been optimizing? couldn't they have been optimizing?