could stable
Verbo regular: stable - stabled- stabled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could stable
you could stable
he could stable
we could stable
you could stable
they could stable 	I could be stabling
you could be stabling
he could be stabling
we could be stabling
you could be stabling
they could be stabling	I could have stabled
you could have stabled
he could have stabled
we could have stabled
you could have stabled
they could have stabled	I could have been stabling
you could have been stabling
he could have been stabling
we could have been stabling
you could have been stabling
they could have been stabling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not stable
you could not stable
he could not stable
we could not stable
you could not stable
they could not stable 	I could not be stabling
you could not be stabling
he could not be stabling
we could not be stabling
you could not be stabling
they could not be stabling	I could not have stabled
you could not have stabled
he could not have stabled
we could not have stabled
you could not have stabled
they could not have stabled	I could not have been stabling
you could not have been stabling
he could not have been stabling
we could not have been stabling
you could not have been stabling
they could not have been stabling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I stable?
could you stable?
could he stable?
could we stable?
could you stable?
could they stable? 	could I be stabling?
could you be stabling?
could he be stabling?
could we be stabling?
could you be stabling?
could they be stabling? 	could I have stabled?
could you have stabled?
could he have stabled?
could we have stabled?
could you have stabled?
could they have stabled? 	could I have been stabling?
could you have been stabling?
could he have been stabling?
could we have been stabling?
could you have been stabling?
could they have been stabling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not stable?
could you not stable?
could he not stable?
could we not stable?
could you not stable?
could they not stable? 	could I not be stabling?
could you not be stabling?
could he not be stabling?
could we not be stabling?
could you not be stabling?
could they not be stabling? 	could I not have stabled?
could you not have stabled?
could he not have stabled?
could we not have stabled?
could you not have stabled?
could they not have stabled? 	could I not have been stabling?
could you not have been stabling?
could he not have been stabling?
could we not have been stabling?
could you not have been stabling?
could they not have been stabling?