could box
Verbo regolare: box - boxed- boxed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could box
you could box
he could box
we could box
you could box
they could box 	I could be boxing
you could be boxing
he could be boxing
we could be boxing
you could be boxing
they could be boxing	I could have boxed
you could have boxed
he could have boxed
we could have boxed
you could have boxed
they could have boxed	I could have been boxing
you could have been boxing
he could have been boxing
we could have been boxing
you could have been boxing
they could have been boxing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't box
you couldn't box
he couldn't box
we couldn't box
you couldn't box
they couldn't box 	I couldn't be boxing
you couldn't be boxing
he couldn't be boxing
we couldn't be boxing
you couldn't be boxing
they couldn't be boxing	I couldn't have boxed
you couldn't have boxed
he couldn't have boxed
we couldn't have boxed
you couldn't have boxed
they couldn't have boxed	I couldn't have been boxing
you couldn't have been boxing
he couldn't have been boxing
we couldn't have been boxing
you couldn't have been boxing
they couldn't have been boxing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I box?
could you box?
could he box?
could we box?
could you box?
could they box? 	could I be boxing?
could you be boxing?
could he be boxing?
could we be boxing?
could you be boxing?
could they be boxing? 	could I have boxed?
could you have boxed?
could he have boxed?
could we have boxed?
could you have boxed?
could they have boxed? 	could I have been boxing?
could you have been boxing?
could he have been boxing?
could we have been boxing?
could you have been boxing?
could they have been boxing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I box?
couldn't you box?
couldn't he box?
couldn't we box?
couldn't you box?
couldn't they box? 	couldn't I be boxing?
couldn't you be boxing?
couldn't he be boxing?
couldn't we be boxing?
couldn't you be boxing?
couldn't they be boxing? 	couldn't I have boxed?
couldn't you have boxed?
couldn't he have boxed?
couldn't we have boxed?
couldn't you have boxed?
couldn't they have boxed? 	couldn't I have been boxing?
couldn't you have been boxing?
couldn't he have been boxing?
couldn't we have been boxing?
couldn't you have been boxing?
couldn't they have been boxing?