could countercharge
Regular verb: countercharge - countercharged- countercharged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could countercharge
you could countercharge
she could countercharge
we could countercharge
you could countercharge
they could countercharge 	I could be countercharging
you could be countercharging
she could be countercharging
we could be countercharging
you could be countercharging
they could be countercharging	I could have countercharged
you could have countercharged
she could have countercharged
we could have countercharged
you could have countercharged
they could have countercharged	I could have been countercharging
you could have been countercharging
she could have been countercharging
we could have been countercharging
you could have been countercharging
they could have been countercharging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't countercharge
you couldn't countercharge
she couldn't countercharge
we couldn't countercharge
you couldn't countercharge
they couldn't countercharge 	I couldn't be countercharging
you couldn't be countercharging
she couldn't be countercharging
we couldn't be countercharging
you couldn't be countercharging
they couldn't be countercharging	I couldn't have countercharged
you couldn't have countercharged
she couldn't have countercharged
we couldn't have countercharged
you couldn't have countercharged
they couldn't have countercharged	I couldn't have been countercharging
you couldn't have been countercharging
she couldn't have been countercharging
we couldn't have been countercharging
you couldn't have been countercharging
they couldn't have been countercharging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I countercharge?
could you countercharge?
could she countercharge?
could we countercharge?
could you countercharge?
could they countercharge? 	could I be countercharging?
could you be countercharging?
could she be countercharging?
could we be countercharging?
could you be countercharging?
could they be countercharging? 	could I have countercharged?
could you have countercharged?
could she have countercharged?
could we have countercharged?
could you have countercharged?
could they have countercharged? 	could I have been countercharging?
could you have been countercharging?
could she have been countercharging?
could we have been countercharging?
could you have been countercharging?
could they have been countercharging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I countercharge?
couldn't you countercharge?
couldn't she countercharge?
couldn't we countercharge?
couldn't you countercharge?
couldn't they countercharge? 	couldn't I be countercharging?
couldn't you be countercharging?
couldn't she be countercharging?
couldn't we be countercharging?
couldn't you be countercharging?
couldn't they be countercharging? 	couldn't I have countercharged?
couldn't you have countercharged?
couldn't she have countercharged?
couldn't we have countercharged?
couldn't you have countercharged?
couldn't they have countercharged? 	couldn't I have been countercharging?
couldn't you have been countercharging?
couldn't she have been countercharging?
couldn't we have been countercharging?
couldn't you have been countercharging?
couldn't they have been countercharging?