could forge
Regular verb: forge - forged- forged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could forge
you could forge
he could forge
we could forge
you could forge
they could forge 	I could be forging
you could be forging
he could be forging
we could be forging
you could be forging
they could be forging	I could have forged
you could have forged
he could have forged
we could have forged
you could have forged
they could have forged	I could have been forging
you could have been forging
he could have been forging
we could have been forging
you could have been forging
they could have been forging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't forge
you couldn't forge
he couldn't forge
we couldn't forge
you couldn't forge
they couldn't forge 	I couldn't be forging
you couldn't be forging
he couldn't be forging
we couldn't be forging
you couldn't be forging
they couldn't be forging	I couldn't have forged
you couldn't have forged
he couldn't have forged
we couldn't have forged
you couldn't have forged
they couldn't have forged	I couldn't have been forging
you couldn't have been forging
he couldn't have been forging
we couldn't have been forging
you couldn't have been forging
they couldn't have been forging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I forge?
could you forge?
could he forge?
could we forge?
could you forge?
could they forge? 	could I be forging?
could you be forging?
could he be forging?
could we be forging?
could you be forging?
could they be forging? 	could I have forged?
could you have forged?
could he have forged?
could we have forged?
could you have forged?
could they have forged? 	could I have been forging?
could you have been forging?
could he have been forging?
could we have been forging?
could you have been forging?
could they have been forging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I forge?
couldn't you forge?
couldn't he forge?
couldn't we forge?
couldn't you forge?
couldn't they forge? 	couldn't I be forging?
couldn't you be forging?
couldn't he be forging?
couldn't we be forging?
couldn't you be forging?
couldn't they be forging? 	couldn't I have forged?
couldn't you have forged?
couldn't he have forged?
couldn't we have forged?
couldn't you have forged?
couldn't they have forged? 	couldn't I have been forging?
couldn't you have been forging?
couldn't he have been forging?
couldn't we have been forging?
couldn't you have been forging?
couldn't they have been forging?