can billow
Verbo regular: billow - billowed- billowed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can billow
you can billow
he can billow
we can billow
you can billow
they can billow 	I can be billowing
you can be billowing
he can be billowing
we can be billowing
you can be billowing
they can be billowing	I can have billowed
you can have billowed
he can have billowed
we can have billowed
you can have billowed
they can have billowed	I can have been billowing
you can have been billowing
he can have been billowing
we can have been billowing
you can have been billowing
they can have been billowing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot billow
you cannot billow
he cannot billow
we cannot billow
you cannot billow
they cannot billow 	I cannot be billowing
you cannot be billowing
he cannot be billowing
we cannot be billowing
you cannot be billowing
they cannot be billowing	I cannot have billowed
you cannot have billowed
he cannot have billowed
we cannot have billowed
you cannot have billowed
they cannot have billowed	I cannot have been billowing
you cannot have been billowing
he cannot have been billowing
we cannot have been billowing
you cannot have been billowing
they cannot have been billowing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I billow?
can you billow?
can he billow?
can we billow?
can you billow?
can they billow? 	can I be billowing?
can you be billowing?
can he be billowing?
can we be billowing?
can you be billowing?
can they be billowing? 	can I have billowed?
can you have billowed?
can he have billowed?
can we have billowed?
can you have billowed?
can they have billowed? 	can I have been billowing?
can you have been billowing?
can he have been billowing?
can we have been billowing?
can you have been billowing?
can they have been billowing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not billow?
can you not billow?
can he not billow?
can we not billow?
can you not billow?
can they not billow? 	can I not be billowing?
can you not be billowing?
can he not be billowing?
can we not be billowing?
can you not be billowing?
can they not be billowing? 	can I not have billowed?
can you not have billowed?
can he not have billowed?
can we not have billowed?
can you not have billowed?
can they not have billowed? 	can I not have been billowing?
can you not have been billowing?
can he not have been billowing?
can we not have been billowing?
can you not have been billowing?
can they not have been billowing?