could repair
Regular verb: repair - repaired- repaired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could repair
you could repair
he could repair
we could repair
you could repair
they could repair 	I could be repairing
you could be repairing
he could be repairing
we could be repairing
you could be repairing
they could be repairing	I could have repaired
you could have repaired
he could have repaired
we could have repaired
you could have repaired
they could have repaired	I could have been repairing
you could have been repairing
he could have been repairing
we could have been repairing
you could have been repairing
they could have been repairing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't repair
you couldn't repair
he couldn't repair
we couldn't repair
you couldn't repair
they couldn't repair 	I couldn't be repairing
you couldn't be repairing
he couldn't be repairing
we couldn't be repairing
you couldn't be repairing
they couldn't be repairing	I couldn't have repaired
you couldn't have repaired
he couldn't have repaired
we couldn't have repaired
you couldn't have repaired
they couldn't have repaired	I couldn't have been repairing
you couldn't have been repairing
he couldn't have been repairing
we couldn't have been repairing
you couldn't have been repairing
they couldn't have been repairing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I repair?
could you repair?
could he repair?
could we repair?
could you repair?
could they repair? 	could I be repairing?
could you be repairing?
could he be repairing?
could we be repairing?
could you be repairing?
could they be repairing? 	could I have repaired?
could you have repaired?
could he have repaired?
could we have repaired?
could you have repaired?
could they have repaired? 	could I have been repairing?
could you have been repairing?
could he have been repairing?
could we have been repairing?
could you have been repairing?
could they have been repairing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I repair?
couldn't you repair?
couldn't he repair?
couldn't we repair?
couldn't you repair?
couldn't they repair? 	couldn't I be repairing?
couldn't you be repairing?
couldn't he be repairing?
couldn't we be repairing?
couldn't you be repairing?
couldn't they be repairing? 	couldn't I have repaired?
couldn't you have repaired?
couldn't he have repaired?
couldn't we have repaired?
couldn't you have repaired?
couldn't they have repaired? 	couldn't I have been repairing?
couldn't you have been repairing?
couldn't he have been repairing?
couldn't we have been repairing?
couldn't you have been repairing?
couldn't they have been repairing?