could skewer
Verbo regular: skewer - skewered- skewered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could skewer
you could skewer
he could skewer
we could skewer
you could skewer
they could skewer 	I could be skewering
you could be skewering
he could be skewering
we could be skewering
you could be skewering
they could be skewering	I could have skewered
you could have skewered
he could have skewered
we could have skewered
you could have skewered
they could have skewered	I could have been skewering
you could have been skewering
he could have been skewering
we could have been skewering
you could have been skewering
they could have been skewering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not skewer
you could not skewer
he could not skewer
we could not skewer
you could not skewer
they could not skewer 	I could not be skewering
you could not be skewering
he could not be skewering
we could not be skewering
you could not be skewering
they could not be skewering	I could not have skewered
you could not have skewered
he could not have skewered
we could not have skewered
you could not have skewered
they could not have skewered	I could not have been skewering
you could not have been skewering
he could not have been skewering
we could not have been skewering
you could not have been skewering
they could not have been skewering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I skewer?
could you skewer?
could he skewer?
could we skewer?
could you skewer?
could they skewer? 	could I be skewering?
could you be skewering?
could he be skewering?
could we be skewering?
could you be skewering?
could they be skewering? 	could I have skewered?
could you have skewered?
could he have skewered?
could we have skewered?
could you have skewered?
could they have skewered? 	could I have been skewering?
could you have been skewering?
could he have been skewering?
could we have been skewering?
could you have been skewering?
could they have been skewering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not skewer?
could you not skewer?
could he not skewer?
could we not skewer?
could you not skewer?
could they not skewer? 	could I not be skewering?
could you not be skewering?
could he not be skewering?
could we not be skewering?
could you not be skewering?
could they not be skewering? 	could I not have skewered?
could you not have skewered?
could he not have skewered?
could we not have skewered?
could you not have skewered?
could they not have skewered? 	could I not have been skewering?
could you not have been skewering?
could he not have been skewering?
could we not have been skewering?
could you not have been skewering?
could they not have been skewering?