could skewer
Verbo regular: skewer - skewered- skewered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con 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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't skewer
you couldn't skewer
he couldn't skewer
we couldn't skewer
you couldn't skewer
they couldn't skewer 	I couldn't be skewering
you couldn't be skewering
he couldn't be skewering
we couldn't be skewering
you couldn't be skewering
they couldn't be skewering	I couldn't have skewered
you couldn't have skewered
he couldn't have skewered
we couldn't have skewered
you couldn't have skewered
they couldn't have skewered	I couldn't have been skewering
you couldn't have been skewering
he couldn't have been skewering
we couldn't have been skewering
you couldn't have been skewering
they couldn't have been skewering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con 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-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I skewer?
couldn't you skewer?
couldn't he skewer?
couldn't we skewer?
couldn't you skewer?
couldn't they skewer? 	couldn't I be skewering?
couldn't you be skewering?
couldn't he be skewering?
couldn't we be skewering?
couldn't you be skewering?
couldn't they be skewering? 	couldn't I have skewered?
couldn't you have skewered?
couldn't he have skewered?
couldn't we have skewered?
couldn't you have skewered?
couldn't they have skewered? 	couldn't I have been skewering?
couldn't you have been skewering?
couldn't he have been skewering?
couldn't we have been skewering?
couldn't you have been skewering?
couldn't they have been skewering?