could stone
Verbo regolare: stone - stoned- stoned

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could stone
you could stone
he could stone
we could stone
you could stone
they could stone 	I could be stoning
you could be stoning
he could be stoning
we could be stoning
you could be stoning
they could be stoning	I could have stoned
you could have stoned
he could have stoned
we could have stoned
you could have stoned
they could have stoned	I could have been stoning
you could have been stoning
he could have been stoning
we could have been stoning
you could have been stoning
they could have been stoning	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not stone
you could not stone
he could not stone
we could not stone
you could not stone
they could not stone 	I could not be stoning
you could not be stoning
he could not be stoning
we could not be stoning
you could not be stoning
they could not be stoning	I could not have stoned
you could not have stoned
he could not have stoned
we could not have stoned
you could not have stoned
they could not have stoned	I could not have been stoning
you could not have been stoning
he could not have been stoning
we could not have been stoning
you could not have been stoning
they could not have been stoning	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I stone?
could you stone?
could he stone?
could we stone?
could you stone?
could they stone? 	could I be stoning?
could you be stoning?
could he be stoning?
could we be stoning?
could you be stoning?
could they be stoning? 	could I have stoned?
could you have stoned?
could he have stoned?
could we have stoned?
could you have stoned?
could they have stoned? 	could I have been stoning?
could you have been stoning?
could he have been stoning?
could we have been stoning?
could you have been stoning?
could they have been stoning? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not stone?
could you not stone?
could he not stone?
could we not stone?
could you not stone?
could they not stone? 	could I not be stoning?
could you not be stoning?
could he not be stoning?
could we not be stoning?
could you not be stoning?
could they not be stoning? 	could I not have stoned?
could you not have stoned?
could he not have stoned?
could we not have stoned?
could you not have stoned?
could they not have stoned? 	could I not have been stoning?
could you not have been stoning?
could he not have been stoning?
could we not have been stoning?
could you not have been stoning?
could they not have been stoning?