can stone
Verbo regular: stone - stoned- stoned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can stone
you can stone
she can stone
we can stone
you can stone
they can stone 	I can be stoning
you can be stoning
she can be stoning
we can be stoning
you can be stoning
they can be stoning	I can have stoned
you can have stoned
she can have stoned
we can have stoned
you can have stoned
they can have stoned	I can have been stoning
you can have been stoning
she can have been stoning
we can have been stoning
you can have been stoning
they can have been stoning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot stone
you cannot stone
she cannot stone
we cannot stone
you cannot stone
they cannot stone 	I cannot be stoning
you cannot be stoning
she cannot be stoning
we cannot be stoning
you cannot be stoning
they cannot be stoning	I cannot have stoned
you cannot have stoned
she cannot have stoned
we cannot have stoned
you cannot have stoned
they cannot have stoned	I cannot have been stoning
you cannot have been stoning
she cannot have been stoning
we cannot have been stoning
you cannot have been stoning
they cannot have been stoning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I stone?
can you stone?
can she stone?
can we stone?
can you stone?
can they stone? 	can I be stoning?
can you be stoning?
can she be stoning?
can we be stoning?
can you be stoning?
can they be stoning? 	can I have stoned?
can you have stoned?
can she have stoned?
can we have stoned?
can you have stoned?
can they have stoned? 	can I have been stoning?
can you have been stoning?
can she have been stoning?
can we have been stoning?
can you have been stoning?
can they have been stoning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not stone?
can you not stone?
can she not stone?
can we not stone?
can you not stone?
can they not stone? 	can I not be stoning?
can you not be stoning?
can she not be stoning?
can we not be stoning?
can you not be stoning?
can they not be stoning? 	can I not have stoned?
can you not have stoned?
can she not have stoned?
can we not have stoned?
can you not have stoned?
can they not have stoned? 	can I not have been stoning?
can you not have been stoning?
can she not have been stoning?
can we not have been stoning?
can you not have been stoning?
can they not have been stoning?