I could counterbalance you could counterbalance he could counterbalance we could counterbalance you could counterbalance they could counterbalance
V-ing form
I could be counterbalancing you could be counterbalancing he could be counterbalancing we could be counterbalancing you could be counterbalancing they could be counterbalancing
Perfect
I could have counterbalanced you could have counterbalanced he could have counterbalanced we could have counterbalanced you could have counterbalanced they could have counterbalanced
V-ing perfect
I could have been counterbalancing you could have been counterbalancing he could have been counterbalancing we could have been counterbalancing you could have been counterbalancing they could have been counterbalancing
Negation
Simple form
I could not counterbalance you could not counterbalance he could not counterbalance we could not counterbalance you could not counterbalance they could not counterbalance
V-ing form
I could not be counterbalancing you could not be counterbalancing he could not be counterbalancing we could not be counterbalancing you could not be counterbalancing they could not be counterbalancing
Perfect
I could not have counterbalanced you could not have counterbalanced he could not have counterbalanced we could not have counterbalanced you could not have counterbalanced they could not have counterbalanced
V-ing perfect
I could not have been counterbalancing you could not have been counterbalancing he could not have been counterbalancing we could not have been counterbalancing you could not have been counterbalancing they could not have been counterbalancing
Interrogative form
Simple form
could I counterbalance? could you counterbalance? could he counterbalance? could we counterbalance? could you counterbalance? could they counterbalance?
V-ing form
could I be counterbalancing? could you be counterbalancing? could he be counterbalancing? could we be counterbalancing? could you be counterbalancing? could they be counterbalancing?
Perfect
could I have counterbalanced? could you have counterbalanced? could he have counterbalanced? could we have counterbalanced? could you have counterbalanced? could they have counterbalanced?
V-ing perfect
could I have been counterbalancing? could you have been counterbalancing? could he have been counterbalancing? could we have been counterbalancing? could you have been counterbalancing? could they have been counterbalancing?
Interro-negative form
Simple form
could I not counterbalance? could you not counterbalance? could he not counterbalance? could we not counterbalance? could you not counterbalance? could they not counterbalance?
V-ing form
could I not be counterbalancing? could you not be counterbalancing? could he not be counterbalancing? could we not be counterbalancing? could you not be counterbalancing? could they not be counterbalancing?
Perfect
could I not have counterbalanced? could you not have counterbalanced? could he not have counterbalanced? could we not have counterbalanced? could you not have counterbalanced? could they not have counterbalanced?
V-ing perfect
could I not have been counterbalancing? could you not have been counterbalancing? could he not have been counterbalancing? could we not have been counterbalancing? could you not have been counterbalancing? could they not have been counterbalancing?