I could harmonize you could harmonize he could harmonize we could harmonize you could harmonize they could harmonize
V-ing form
I could be harmonizing you could be harmonizing he could be harmonizing we could be harmonizing you could be harmonizing they could be harmonizing
Perfect
I could have harmonized you could have harmonized he could have harmonized we could have harmonized you could have harmonized they could have harmonized
V-ing perfect
I could have been harmonizing you could have been harmonizing he could have been harmonizing we could have been harmonizing you could have been harmonizing they could have been harmonizing
Negation
Simple form
I could not harmonize you could not harmonize he could not harmonize we could not harmonize you could not harmonize they could not harmonize
V-ing form
I could not be harmonizing you could not be harmonizing he could not be harmonizing we could not be harmonizing you could not be harmonizing they could not be harmonizing
Perfect
I could not have harmonized you could not have harmonized he could not have harmonized we could not have harmonized you could not have harmonized they could not have harmonized
V-ing perfect
I could not have been harmonizing you could not have been harmonizing he could not have been harmonizing we could not have been harmonizing you could not have been harmonizing they could not have been harmonizing
Interrogative form
Simple form
could I harmonize? could you harmonize? could he harmonize? could we harmonize? could you harmonize? could they harmonize?
V-ing form
could I be harmonizing? could you be harmonizing? could he be harmonizing? could we be harmonizing? could you be harmonizing? could they be harmonizing?
Perfect
could I have harmonized? could you have harmonized? could he have harmonized? could we have harmonized? could you have harmonized? could they have harmonized?
V-ing perfect
could I have been harmonizing? could you have been harmonizing? could he have been harmonizing? could we have been harmonizing? could you have been harmonizing? could they have been harmonizing?
Interro-negative form
Simple form
could I not harmonize? could you not harmonize? could he not harmonize? could we not harmonize? could you not harmonize? could they not harmonize?
V-ing form
could I not be harmonizing? could you not be harmonizing? could he not be harmonizing? could we not be harmonizing? could you not be harmonizing? could they not be harmonizing?
Perfect
could I not have harmonized? could you not have harmonized? could he not have harmonized? could we not have harmonized? could you not have harmonized? could they not have harmonized?
V-ing perfect
could I not have been harmonizing? could you not have been harmonizing? could he not have been harmonizing? could we not have been harmonizing? could you not have been harmonizing? could they not have been harmonizing?