could supercharge
Regular verb: supercharge - supercharged- supercharged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could supercharge
you could supercharge
he could supercharge
we could supercharge
you could supercharge
they could supercharge 	I could be supercharging
you could be supercharging
he could be supercharging
we could be supercharging
you could be supercharging
they could be supercharging	I could have supercharged
you could have supercharged
he could have supercharged
we could have supercharged
you could have supercharged
they could have supercharged	I could have been supercharging
you could have been supercharging
he could have been supercharging
we could have been supercharging
you could have been supercharging
they could have been supercharging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't supercharge
you couldn't supercharge
he couldn't supercharge
we couldn't supercharge
you couldn't supercharge
they couldn't supercharge 	I couldn't be supercharging
you couldn't be supercharging
he couldn't be supercharging
we couldn't be supercharging
you couldn't be supercharging
they couldn't be supercharging	I couldn't have supercharged
you couldn't have supercharged
he couldn't have supercharged
we couldn't have supercharged
you couldn't have supercharged
they couldn't have supercharged	I couldn't have been supercharging
you couldn't have been supercharging
he couldn't have been supercharging
we couldn't have been supercharging
you couldn't have been supercharging
they couldn't have been supercharging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I supercharge?
could you supercharge?
could he supercharge?
could we supercharge?
could you supercharge?
could they supercharge? 	could I be supercharging?
could you be supercharging?
could he be supercharging?
could we be supercharging?
could you be supercharging?
could they be supercharging? 	could I have supercharged?
could you have supercharged?
could he have supercharged?
could we have supercharged?
could you have supercharged?
could they have supercharged? 	could I have been supercharging?
could you have been supercharging?
could he have been supercharging?
could we have been supercharging?
could you have been supercharging?
could they have been supercharging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I supercharge?
couldn't you supercharge?
couldn't he supercharge?
couldn't we supercharge?
couldn't you supercharge?
couldn't they supercharge? 	couldn't I be supercharging?
couldn't you be supercharging?
couldn't he be supercharging?
couldn't we be supercharging?
couldn't you be supercharging?
couldn't they be supercharging? 	couldn't I have supercharged?
couldn't you have supercharged?
couldn't he have supercharged?
couldn't we have supercharged?
couldn't you have supercharged?
couldn't they have supercharged? 	couldn't I have been supercharging?
couldn't you have been supercharging?
couldn't he have been supercharging?
couldn't we have been supercharging?
couldn't you have been supercharging?
couldn't they have been supercharging?