could hollow
Verbo regular: hollow - hollowed- hollowed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could hollow
you could hollow
he could hollow
we could hollow
you could hollow
they could hollow 	I could be hollowing
you could be hollowing
he could be hollowing
we could be hollowing
you could be hollowing
they could be hollowing	I could have hollowed
you could have hollowed
he could have hollowed
we could have hollowed
you could have hollowed
they could have hollowed	I could have been hollowing
you could have been hollowing
he could have been hollowing
we could have been hollowing
you could have been hollowing
they could have been hollowing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not hollow
you could not hollow
he could not hollow
we could not hollow
you could not hollow
they could not hollow 	I could not be hollowing
you could not be hollowing
he could not be hollowing
we could not be hollowing
you could not be hollowing
they could not be hollowing	I could not have hollowed
you could not have hollowed
he could not have hollowed
we could not have hollowed
you could not have hollowed
they could not have hollowed	I could not have been hollowing
you could not have been hollowing
he could not have been hollowing
we could not have been hollowing
you could not have been hollowing
they could not have been hollowing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I hollow?
could you hollow?
could he hollow?
could we hollow?
could you hollow?
could they hollow? 	could I be hollowing?
could you be hollowing?
could he be hollowing?
could we be hollowing?
could you be hollowing?
could they be hollowing? 	could I have hollowed?
could you have hollowed?
could he have hollowed?
could we have hollowed?
could you have hollowed?
could they have hollowed? 	could I have been hollowing?
could you have been hollowing?
could he have been hollowing?
could we have been hollowing?
could you have been hollowing?
could they have been hollowing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not hollow?
could you not hollow?
could he not hollow?
could we not hollow?
could you not hollow?
could they not hollow? 	could I not be hollowing?
could you not be hollowing?
could he not be hollowing?
could we not be hollowing?
could you not be hollowing?
could they not be hollowing? 	could I not have hollowed?
could you not have hollowed?
could he not have hollowed?
could we not have hollowed?
could you not have hollowed?
could they not have hollowed? 	could I not have been hollowing?
could you not have been hollowing?
could he not have been hollowing?
could we not have been hollowing?
could you not have been hollowing?
could they not have been hollowing?