I could recharge you could recharge he could recharge we could recharge you could recharge they could recharge
V-ing form
I could be recharging you could be recharging he could be recharging we could be recharging you could be recharging they could be recharging
Perfect
I could have recharged you could have recharged he could have recharged we could have recharged you could have recharged they could have recharged
V-ing perfect
I could have been recharging you could have been recharging he could have been recharging we could have been recharging you could have been recharging they could have been recharging
Negation
Simple form
I couldn't recharge you couldn't recharge he couldn't recharge we couldn't recharge you couldn't recharge they couldn't recharge
V-ing form
I couldn't be recharging you couldn't be recharging he couldn't be recharging we couldn't be recharging you couldn't be recharging they couldn't be recharging
Perfect
I couldn't have recharged you couldn't have recharged he couldn't have recharged we couldn't have recharged you couldn't have recharged they couldn't have recharged
V-ing perfect
I couldn't have been recharging you couldn't have been recharging he couldn't have been recharging we couldn't have been recharging you couldn't have been recharging they couldn't have been recharging
Interrogative form
Simple form
could I recharge? could you recharge? could he recharge? could we recharge? could you recharge? could they recharge?
V-ing form
could I be recharging? could you be recharging? could he be recharging? could we be recharging? could you be recharging? could they be recharging?
Perfect
could I have recharged? could you have recharged? could he have recharged? could we have recharged? could you have recharged? could they have recharged?
V-ing perfect
could I have been recharging? could you have been recharging? could he have been recharging? could we have been recharging? could you have been recharging? could they have been recharging?
Interro-negative form
Simple form
couldn't I recharge? couldn't you recharge? couldn't he recharge? couldn't we recharge? couldn't you recharge? couldn't they recharge?
V-ing form
couldn't I be recharging? couldn't you be recharging? couldn't he be recharging? couldn't we be recharging? couldn't you be recharging? couldn't they be recharging?
Perfect
couldn't I have recharged? couldn't you have recharged? couldn't he have recharged? couldn't we have recharged? couldn't you have recharged? couldn't they have recharged?
V-ing perfect
couldn't I have been recharging? couldn't you have been recharging? couldn't he have been recharging? couldn't we have been recharging? couldn't you have been recharging? couldn't they have been recharging?