could overfly
Irregular verb: overfly - overflew- overflown

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overfly
you could overfly
he could overfly
we could overfly
you could overfly
they could overfly 	I could be overflying
you could be overflying
he could be overflying
we could be overflying
you could be overflying
they could be overflying	I could have overflown
you could have overflown
he could have overflown
we could have overflown
you could have overflown
they could have overflown	I could have been overflying
you could have been overflying
he could have been overflying
we could have been overflying
you could have been overflying
they could have been overflying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overfly
you couldn't overfly
he couldn't overfly
we couldn't overfly
you couldn't overfly
they couldn't overfly 	I couldn't be overflying
you couldn't be overflying
he couldn't be overflying
we couldn't be overflying
you couldn't be overflying
they couldn't be overflying	I couldn't have overflown
you couldn't have overflown
he couldn't have overflown
we couldn't have overflown
you couldn't have overflown
they couldn't have overflown	I couldn't have been overflying
you couldn't have been overflying
he couldn't have been overflying
we couldn't have been overflying
you couldn't have been overflying
they couldn't have been overflying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overfly?
could you overfly?
could he overfly?
could we overfly?
could you overfly?
could they overfly? 	could I be overflying?
could you be overflying?
could he be overflying?
could we be overflying?
could you be overflying?
could they be overflying? 	could I have overflown?
could you have overflown?
could he have overflown?
could we have overflown?
could you have overflown?
could they have overflown? 	could I have been overflying?
could you have been overflying?
could he have been overflying?
could we have been overflying?
could you have been overflying?
could they have been overflying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overfly?
couldn't you overfly?
couldn't he overfly?
couldn't we overfly?
couldn't you overfly?
couldn't they overfly? 	couldn't I be overflying?
couldn't you be overflying?
couldn't he be overflying?
couldn't we be overflying?
couldn't you be overflying?
couldn't they be overflying? 	couldn't I have overflown?
couldn't you have overflown?
couldn't he have overflown?
couldn't we have overflown?
couldn't you have overflown?
couldn't they have overflown? 	couldn't I have been overflying?
couldn't you have been overflying?
couldn't he have been overflying?
couldn't we have been overflying?
couldn't you have been overflying?
couldn't they have been overflying?