could submarine
Verbo regolare: submarine - submarined- submarined

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could submarine
you could submarine
he could submarine
we could submarine
you could submarine
they could submarine 	I could be submarining
you could be submarining
he could be submarining
we could be submarining
you could be submarining
they could be submarining	I could have submarined
you could have submarined
he could have submarined
we could have submarined
you could have submarined
they could have submarined	I could have been submarining
you could have been submarining
he could have been submarining
we could have been submarining
you could have been submarining
they could have been submarining	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not submarine
you could not submarine
he could not submarine
we could not submarine
you could not submarine
they could not submarine 	I could not be submarining
you could not be submarining
he could not be submarining
we could not be submarining
you could not be submarining
they could not be submarining	I could not have submarined
you could not have submarined
he could not have submarined
we could not have submarined
you could not have submarined
they could not have submarined	I could not have been submarining
you could not have been submarining
he could not have been submarining
we could not have been submarining
you could not have been submarining
they could not have been submarining	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I submarine?
could you submarine?
could he submarine?
could we submarine?
could you submarine?
could they submarine? 	could I be submarining?
could you be submarining?
could he be submarining?
could we be submarining?
could you be submarining?
could they be submarining? 	could I have submarined?
could you have submarined?
could he have submarined?
could we have submarined?
could you have submarined?
could they have submarined? 	could I have been submarining?
could you have been submarining?
could he have been submarining?
could we have been submarining?
could you have been submarining?
could they have been submarining? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not submarine?
could you not submarine?
could he not submarine?
could we not submarine?
could you not submarine?
could they not submarine? 	could I not be submarining?
could you not be submarining?
could he not be submarining?
could we not be submarining?
could you not be submarining?
could they not be submarining? 	could I not have submarined?
could you not have submarined?
could he not have submarined?
could we not have submarined?
could you not have submarined?
could they not have submarined? 	could I not have been submarining?
could you not have been submarining?
could he not have been submarining?
could we not have been submarining?
could you not have been submarining?
could they not have been submarining?