English verb conjugation
COULD EMBITTER

Regular verb: embitter - embittered - embittered

Affirmation

Simple form	V-ing form
I could embitter you could embitter he could embitter we could embitter you could embitter they could embitter	I could be embittering you could be embittering he could be embittering we could be embittering you could be embittering they could be embittering
Perfect	V-ing perfect
I could have embittered you could have embittered he could have embittered we could have embittered you could have embittered they could have embittered	I could have been embittering you could have been embittering he could have been embittering we could have been embittering you could have been embittering they could have been embittering

Negation

Simple form	V-ing form
I could not embitter you could not embitter he could not embitter we could not embitter you could not embitter they could not embitter	I could not be embittering you could not be embittering he could not be embittering we could not be embittering you could not be embittering they could not be embittering
Perfect	V-ing perfect
I could not have embittered you could not have embittered he could not have embittered we could not have embittered you could not have embittered they could not have embittered	I could not have been embittering you could not have been embittering he could not have been embittering we could not have been embittering you could not have been embittering they could not have been embittering

Interrogative form

Simple form	V-ing form
could I embitter? could you embitter? could he embitter? could we embitter? could you embitter? could they embitter?	could I be embittering? could you be embittering? could he be embittering? could we be embittering? could you be embittering? could they be embittering?
Perfect	V-ing perfect
could I have embittered? could you have embittered? could he have embittered? could we have embittered? could you have embittered? could they have embittered?	could I have been embittering? could you have been embittering? could he have been embittering? could we have been embittering? could you have been embittering? could they have been embittering?

Interro-negative form

Simple form	V-ing form
could I not embitter? could you not embitter? could he not embitter? could we not embitter? could you not embitter? could they not embitter?	could I not be embittering? could you not be embittering? could he not be embittering? could we not be embittering? could you not be embittering? could they not be embittering?
Perfect	V-ing perfect
could I not have embittered? could you not have embittered? could he not have embittered? could we not have embittered? could you not have embittered? could they not have embittered?	could I not have been embittering? could you not have been embittering? could he not have been embittering? could we not have been embittering? could you not have been embittering? could they not have been embittering?