English verb conjugation
COULD JITTER

Regular verb: jitter - jittered - jittered

Affirmation

Simple form	V-ing form
I could jitter you could jitter he could jitter we could jitter you could jitter they could jitter	I could be jittering you could be jittering he could be jittering we could be jittering you could be jittering they could be jittering
Perfect	V-ing perfect
I could have jittered you could have jittered he could have jittered we could have jittered you could have jittered they could have jittered	I could have been jittering you could have been jittering he could have been jittering we could have been jittering you could have been jittering they could have been jittering

Negation

Simple form	V-ing form
I could not jitter you could not jitter he could not jitter we could not jitter you could not jitter they could not jitter	I could not be jittering you could not be jittering he could not be jittering we could not be jittering you could not be jittering they could not be jittering
Perfect	V-ing perfect
I could not have jittered you could not have jittered he could not have jittered we could not have jittered you could not have jittered they could not have jittered	I could not have been jittering you could not have been jittering he could not have been jittering we could not have been jittering you could not have been jittering they could not have been jittering

Interrogative form

Simple form	V-ing form
could I jitter? could you jitter? could he jitter? could we jitter? could you jitter? could they jitter?	could I be jittering? could you be jittering? could he be jittering? could we be jittering? could you be jittering? could they be jittering?
Perfect	V-ing perfect
could I have jittered? could you have jittered? could he have jittered? could we have jittered? could you have jittered? could they have jittered?	could I have been jittering? could you have been jittering? could he have been jittering? could we have been jittering? could you have been jittering? could they have been jittering?

Interro-negative form

Simple form	V-ing form
could I not jitter? could you not jitter? could he not jitter? could we not jitter? could you not jitter? could they not jitter?	could I not be jittering? could you not be jittering? could he not be jittering? could we not be jittering? could you not be jittering? could they not be jittering?
Perfect	V-ing perfect
could I not have jittered? could you not have jittered? could he not have jittered? could we not have jittered? could you not have jittered? could they not have jittered?	could I not have been jittering? could you not have been jittering? could he not have been jittering? could we not have been jittering? could you not have been jittering? could they not have been jittering?