could engrail
Verbo regular: engrail - engrailed- engrailed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could engrail
you could engrail
he could engrail
we could engrail
you could engrail
they could engrail 	I could be engrailing
you could be engrailing
he could be engrailing
we could be engrailing
you could be engrailing
they could be engrailing	I could have engrailed
you could have engrailed
he could have engrailed
we could have engrailed
you could have engrailed
they could have engrailed	I could have been engrailing
you could have been engrailing
he could have been engrailing
we could have been engrailing
you could have been engrailing
they could have been engrailing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not engrail
you could not engrail
he could not engrail
we could not engrail
you could not engrail
they could not engrail 	I could not be engrailing
you could not be engrailing
he could not be engrailing
we could not be engrailing
you could not be engrailing
they could not be engrailing	I could not have engrailed
you could not have engrailed
he could not have engrailed
we could not have engrailed
you could not have engrailed
they could not have engrailed	I could not have been engrailing
you could not have been engrailing
he could not have been engrailing
we could not have been engrailing
you could not have been engrailing
they could not have been engrailing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I engrail?
could you engrail?
could he engrail?
could we engrail?
could you engrail?
could they engrail? 	could I be engrailing?
could you be engrailing?
could he be engrailing?
could we be engrailing?
could you be engrailing?
could they be engrailing? 	could I have engrailed?
could you have engrailed?
could he have engrailed?
could we have engrailed?
could you have engrailed?
could they have engrailed? 	could I have been engrailing?
could you have been engrailing?
could he have been engrailing?
could we have been engrailing?
could you have been engrailing?
could they have been engrailing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not engrail?
could you not engrail?
could he not engrail?
could we not engrail?
could you not engrail?
could they not engrail? 	could I not be engrailing?
could you not be engrailing?
could he not be engrailing?
could we not be engrailing?
could you not be engrailing?
could they not be engrailing? 	could I not have engrailed?
could you not have engrailed?
could he not have engrailed?
could we not have engrailed?
could you not have engrailed?
could they not have engrailed? 	could I not have been engrailing?
could you not have been engrailing?
could he not have been engrailing?
could we not have been engrailing?
could you not have been engrailing?
could they not have been engrailing?