could power
Regular verb: power - powered- powered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could power
you could power
he could power
we could power
you could power
they could power 	I could be powering
you could be powering
he could be powering
we could be powering
you could be powering
they could be powering	I could have powered
you could have powered
he could have powered
we could have powered
you could have powered
they could have powered	I could have been powering
you could have been powering
he could have been powering
we could have been powering
you could have been powering
they could have been powering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't power
you couldn't power
he couldn't power
we couldn't power
you couldn't power
they couldn't power 	I couldn't be powering
you couldn't be powering
he couldn't be powering
we couldn't be powering
you couldn't be powering
they couldn't be powering	I couldn't have powered
you couldn't have powered
he couldn't have powered
we couldn't have powered
you couldn't have powered
they couldn't have powered	I couldn't have been powering
you couldn't have been powering
he couldn't have been powering
we couldn't have been powering
you couldn't have been powering
they couldn't have been powering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I power?
could you power?
could he power?
could we power?
could you power?
could they power? 	could I be powering?
could you be powering?
could he be powering?
could we be powering?
could you be powering?
could they be powering? 	could I have powered?
could you have powered?
could he have powered?
could we have powered?
could you have powered?
could they have powered? 	could I have been powering?
could you have been powering?
could he have been powering?
could we have been powering?
could you have been powering?
could they have been powering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I power?
couldn't you power?
couldn't he power?
couldn't we power?
couldn't you power?
couldn't they power? 	couldn't I be powering?
couldn't you be powering?
couldn't he be powering?
couldn't we be powering?
couldn't you be powering?
couldn't they be powering? 	couldn't I have powered?
couldn't you have powered?
couldn't he have powered?
couldn't we have powered?
couldn't you have powered?
couldn't they have powered? 	couldn't I have been powering?
couldn't you have been powering?
couldn't he have been powering?
couldn't we have been powering?
couldn't you have been powering?
couldn't they have been powering?