could counterweigh
Regular verb: counterweigh - counterweighed- counterweighed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could counterweigh
you could counterweigh
she could counterweigh
we could counterweigh
you could counterweigh
they could counterweigh 	I could be counterweighing
you could be counterweighing
she could be counterweighing
we could be counterweighing
you could be counterweighing
they could be counterweighing	I could have counterweighed
you could have counterweighed
she could have counterweighed
we could have counterweighed
you could have counterweighed
they could have counterweighed	I could have been counterweighing
you could have been counterweighing
she could have been counterweighing
we could have been counterweighing
you could have been counterweighing
they could have been counterweighing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't counterweigh
you couldn't counterweigh
she couldn't counterweigh
we couldn't counterweigh
you couldn't counterweigh
they couldn't counterweigh 	I couldn't be counterweighing
you couldn't be counterweighing
she couldn't be counterweighing
we couldn't be counterweighing
you couldn't be counterweighing
they couldn't be counterweighing	I couldn't have counterweighed
you couldn't have counterweighed
she couldn't have counterweighed
we couldn't have counterweighed
you couldn't have counterweighed
they couldn't have counterweighed	I couldn't have been counterweighing
you couldn't have been counterweighing
she couldn't have been counterweighing
we couldn't have been counterweighing
you couldn't have been counterweighing
they couldn't have been counterweighing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I counterweigh?
could you counterweigh?
could she counterweigh?
could we counterweigh?
could you counterweigh?
could they counterweigh? 	could I be counterweighing?
could you be counterweighing?
could she be counterweighing?
could we be counterweighing?
could you be counterweighing?
could they be counterweighing? 	could I have counterweighed?
could you have counterweighed?
could she have counterweighed?
could we have counterweighed?
could you have counterweighed?
could they have counterweighed? 	could I have been counterweighing?
could you have been counterweighing?
could she have been counterweighing?
could we have been counterweighing?
could you have been counterweighing?
could they have been counterweighing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I counterweigh?
couldn't you counterweigh?
couldn't she counterweigh?
couldn't we counterweigh?
couldn't you counterweigh?
couldn't they counterweigh? 	couldn't I be counterweighing?
couldn't you be counterweighing?
couldn't she be counterweighing?
couldn't we be counterweighing?
couldn't you be counterweighing?
couldn't they be counterweighing? 	couldn't I have counterweighed?
couldn't you have counterweighed?
couldn't she have counterweighed?
couldn't we have counterweighed?
couldn't you have counterweighed?
couldn't they have counterweighed? 	couldn't I have been counterweighing?
couldn't you have been counterweighing?
couldn't she have been counterweighing?
couldn't we have been counterweighing?
couldn't you have been counterweighing?
couldn't they have been counterweighing?