I could turbocharge you could turbocharge she could turbocharge we could turbocharge you could turbocharge they could turbocharge
V-ing form
I could be turbocharging you could be turbocharging she could be turbocharging we could be turbocharging you could be turbocharging they could be turbocharging
Perfect
I could have turbocharged you could have turbocharged she could have turbocharged we could have turbocharged you could have turbocharged they could have turbocharged
V-ing perfect
I could have been turbocharging you could have been turbocharging she could have been turbocharging we could have been turbocharging you could have been turbocharging they could have been turbocharging
Negation
Simple form
I could not turbocharge you could not turbocharge she could not turbocharge we could not turbocharge you could not turbocharge they could not turbocharge
V-ing form
I could not be turbocharging you could not be turbocharging she could not be turbocharging we could not be turbocharging you could not be turbocharging they could not be turbocharging
Perfect
I could not have turbocharged you could not have turbocharged she could not have turbocharged we could not have turbocharged you could not have turbocharged they could not have turbocharged
V-ing perfect
I could not have been turbocharging you could not have been turbocharging she could not have been turbocharging we could not have been turbocharging you could not have been turbocharging they could not have been turbocharging
Interrogative form
Simple form
could I turbocharge? could you turbocharge? could she turbocharge? could we turbocharge? could you turbocharge? could they turbocharge?
V-ing form
could I be turbocharging? could you be turbocharging? could she be turbocharging? could we be turbocharging? could you be turbocharging? could they be turbocharging?
Perfect
could I have turbocharged? could you have turbocharged? could she have turbocharged? could we have turbocharged? could you have turbocharged? could they have turbocharged?
V-ing perfect
could I have been turbocharging? could you have been turbocharging? could she have been turbocharging? could we have been turbocharging? could you have been turbocharging? could they have been turbocharging?
Interro-negative form
Simple form
could I not turbocharge? could you not turbocharge? could she not turbocharge? could we not turbocharge? could you not turbocharge? could they not turbocharge?
V-ing form
could I not be turbocharging? could you not be turbocharging? could she not be turbocharging? could we not be turbocharging? could you not be turbocharging? could they not be turbocharging?
Perfect
could I not have turbocharged? could you not have turbocharged? could she not have turbocharged? could we not have turbocharged? could you not have turbocharged? could they not have turbocharged?
V-ing perfect
could I not have been turbocharging? could you not have been turbocharging? could she not have been turbocharging? could we not have been turbocharging? could you not have been turbocharging? could they not have been turbocharging?