could counterweigh
Regular verb: counterweigh - counterweighed- counterweighed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could counterweigh
you could counterweigh
he could counterweigh
we could counterweigh
you could counterweigh
they could counterweigh 	I could be counterweighing
you could be counterweighing
he could be counterweighing
we could be counterweighing
you could be counterweighing
they could be counterweighing	I could have counterweighed
you could have counterweighed
he 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
he 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
he 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
he 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
he 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
he 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 he counterweigh?
could we counterweigh?
could you counterweigh?
could they counterweigh? 	could I be counterweighing?
could you be counterweighing?
could he be counterweighing?
could we be counterweighing?
could you be counterweighing?
could they be counterweighing? 	could I have counterweighed?
could you have counterweighed?
could he 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 he 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 he 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 he 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 he 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 he have been counterweighing?
couldn't we have been counterweighing?
couldn't you have been counterweighing?
couldn't they have been counterweighing?