could jitter
Verbe régulier : jitter - jittered- jittered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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?