could beep
Verbo regular: beep - beeped- beeped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could beep
you could beep
he could beep
we could beep
you could beep
they could beep 	I could be beeping
you could be beeping
he could be beeping
we could be beeping
you could be beeping
they could be beeping	I could have beeped
you could have beeped
he could have beeped
we could have beeped
you could have beeped
they could have beeped	I could have been beeping
you could have been beeping
he could have been beeping
we could have been beeping
you could have been beeping
they could have been beeping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not beep
you could not beep
he could not beep
we could not beep
you could not beep
they could not beep 	I could not be beeping
you could not be beeping
he could not be beeping
we could not be beeping
you could not be beeping
they could not be beeping	I could not have beeped
you could not have beeped
he could not have beeped
we could not have beeped
you could not have beeped
they could not have beeped	I could not have been beeping
you could not have been beeping
he could not have been beeping
we could not have been beeping
you could not have been beeping
they could not have been beeping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I beep?
could you beep?
could he beep?
could we beep?
could you beep?
could they beep? 	could I be beeping?
could you be beeping?
could he be beeping?
could we be beeping?
could you be beeping?
could they be beeping? 	could I have beeped?
could you have beeped?
could he have beeped?
could we have beeped?
could you have beeped?
could they have beeped? 	could I have been beeping?
could you have been beeping?
could he have been beeping?
could we have been beeping?
could you have been beeping?
could they have been beeping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not beep?
could you not beep?
could he not beep?
could we not beep?
could you not beep?
could they not beep? 	could I not be beeping?
could you not be beeping?
could he not be beeping?
could we not be beeping?
could you not be beeping?
could they not be beeping? 	could I not have beeped?
could you not have beeped?
could he not have beeped?
could we not have beeped?
could you not have beeped?
could they not have beeped? 	could I not have been beeping?
could you not have been beeping?
could he not have been beeping?
could we not have been beeping?
could you not have been beeping?
could they not have been beeping?