could bull
Verbo regolare: bull - bulled- bulled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could bull
you could bull
he could bull
we could bull
you could bull
they could bull 	I could be bulling
you could be bulling
he could be bulling
we could be bulling
you could be bulling
they could be bulling	I could have bulled
you could have bulled
he could have bulled
we could have bulled
you could have bulled
they could have bulled	I could have been bulling
you could have been bulling
he could have been bulling
we could have been bulling
you could have been bulling
they could have been bulling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't bull
you couldn't bull
he couldn't bull
we couldn't bull
you couldn't bull
they couldn't bull 	I couldn't be bulling
you couldn't be bulling
he couldn't be bulling
we couldn't be bulling
you couldn't be bulling
they couldn't be bulling	I couldn't have bulled
you couldn't have bulled
he couldn't have bulled
we couldn't have bulled
you couldn't have bulled
they couldn't have bulled	I couldn't have been bulling
you couldn't have been bulling
he couldn't have been bulling
we couldn't have been bulling
you couldn't have been bulling
they couldn't have been bulling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I bull?
could you bull?
could he bull?
could we bull?
could you bull?
could they bull? 	could I be bulling?
could you be bulling?
could he be bulling?
could we be bulling?
could you be bulling?
could they be bulling? 	could I have bulled?
could you have bulled?
could he have bulled?
could we have bulled?
could you have bulled?
could they have bulled? 	could I have been bulling?
could you have been bulling?
could he have been bulling?
could we have been bulling?
could you have been bulling?
could they have been bulling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I bull?
couldn't you bull?
couldn't he bull?
couldn't we bull?
couldn't you bull?
couldn't they bull? 	couldn't I be bulling?
couldn't you be bulling?
couldn't he be bulling?
couldn't we be bulling?
couldn't you be bulling?
couldn't they be bulling? 	couldn't I have bulled?
couldn't you have bulled?
couldn't he have bulled?
couldn't we have bulled?
couldn't you have bulled?
couldn't they have bulled? 	couldn't I have been bulling?
couldn't you have been bulling?
couldn't he have been bulling?
couldn't we have been bulling?
couldn't you have been bulling?
couldn't they have been bulling?