could butcher
Regular verb: butcher - butchered- butchered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could butcher
you could butcher
he could butcher
we could butcher
you could butcher
they could butcher 	I could be butchering
you could be butchering
he could be butchering
we could be butchering
you could be butchering
they could be butchering	I could have butchered
you could have butchered
he could have butchered
we could have butchered
you could have butchered
they could have butchered	I could have been butchering
you could have been butchering
he could have been butchering
we could have been butchering
you could have been butchering
they could have been butchering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't butcher
you couldn't butcher
he couldn't butcher
we couldn't butcher
you couldn't butcher
they couldn't butcher 	I couldn't be butchering
you couldn't be butchering
he couldn't be butchering
we couldn't be butchering
you couldn't be butchering
they couldn't be butchering	I couldn't have butchered
you couldn't have butchered
he couldn't have butchered
we couldn't have butchered
you couldn't have butchered
they couldn't have butchered	I couldn't have been butchering
you couldn't have been butchering
he couldn't have been butchering
we couldn't have been butchering
you couldn't have been butchering
they couldn't have been butchering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I butcher?
could you butcher?
could he butcher?
could we butcher?
could you butcher?
could they butcher? 	could I be butchering?
could you be butchering?
could he be butchering?
could we be butchering?
could you be butchering?
could they be butchering? 	could I have butchered?
could you have butchered?
could he have butchered?
could we have butchered?
could you have butchered?
could they have butchered? 	could I have been butchering?
could you have been butchering?
could he have been butchering?
could we have been butchering?
could you have been butchering?
could they have been butchering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I butcher?
couldn't you butcher?
couldn't he butcher?
couldn't we butcher?
couldn't you butcher?
couldn't they butcher? 	couldn't I be butchering?
couldn't you be butchering?
couldn't he be butchering?
couldn't we be butchering?
couldn't you be butchering?
couldn't they be butchering? 	couldn't I have butchered?
couldn't you have butchered?
couldn't he have butchered?
couldn't we have butchered?
couldn't you have butchered?
couldn't they have butchered? 	couldn't I have been butchering?
couldn't you have been butchering?
couldn't he have been butchering?
couldn't we have been butchering?
couldn't you have been butchering?
couldn't they have been butchering?