could flitter
Regular verb: flitter - flittered- flittered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could flitter
you could flitter
he could flitter
we could flitter
you could flitter
they could flitter 	I could be flittering
you could be flittering
he could be flittering
we could be flittering
you could be flittering
they could be flittering	I could have flittered
you could have flittered
he could have flittered
we could have flittered
you could have flittered
they could have flittered	I could have been flittering
you could have been flittering
he could have been flittering
we could have been flittering
you could have been flittering
they could have been flittering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't flitter
you couldn't flitter
he couldn't flitter
we couldn't flitter
you couldn't flitter
they couldn't flitter 	I couldn't be flittering
you couldn't be flittering
he couldn't be flittering
we couldn't be flittering
you couldn't be flittering
they couldn't be flittering	I couldn't have flittered
you couldn't have flittered
he couldn't have flittered
we couldn't have flittered
you couldn't have flittered
they couldn't have flittered	I couldn't have been flittering
you couldn't have been flittering
he couldn't have been flittering
we couldn't have been flittering
you couldn't have been flittering
they couldn't have been flittering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I flitter?
could you flitter?
could he flitter?
could we flitter?
could you flitter?
could they flitter? 	could I be flittering?
could you be flittering?
could he be flittering?
could we be flittering?
could you be flittering?
could they be flittering? 	could I have flittered?
could you have flittered?
could he have flittered?
could we have flittered?
could you have flittered?
could they have flittered? 	could I have been flittering?
could you have been flittering?
could he have been flittering?
could we have been flittering?
could you have been flittering?
could they have been flittering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I flitter?
couldn't you flitter?
couldn't he flitter?
couldn't we flitter?
couldn't you flitter?
couldn't they flitter? 	couldn't I be flittering?
couldn't you be flittering?
couldn't he be flittering?
couldn't we be flittering?
couldn't you be flittering?
couldn't they be flittering? 	couldn't I have flittered?
couldn't you have flittered?
couldn't he have flittered?
couldn't we have flittered?
couldn't you have flittered?
couldn't they have flittered? 	couldn't I have been flittering?
couldn't you have been flittering?
couldn't he have been flittering?
couldn't we have been flittering?
couldn't you have been flittering?
couldn't they have been flittering?