I can counterweight you can counterweight he can counterweight we can counterweight you can counterweight they can counterweight
V-ing form
I can be counterweighting you can be counterweighting he can be counterweighting we can be counterweighting you can be counterweighting they can be counterweighting
Perfect
I can have counterweighted you can have counterweighted he can have counterweighted we can have counterweighted you can have counterweighted they can have counterweighted
V-ing perfect
I can have been counterweighting you can have been counterweighting he can have been counterweighting we can have been counterweighting you can have been counterweighting they can have been counterweighting
Negation
Simple form
I cannot counterweight you cannot counterweight he cannot counterweight we cannot counterweight you cannot counterweight they cannot counterweight
V-ing form
I cannot be counterweighting you cannot be counterweighting he cannot be counterweighting we cannot be counterweighting you cannot be counterweighting they cannot be counterweighting
Perfect
I cannot have counterweighted you cannot have counterweighted he cannot have counterweighted we cannot have counterweighted you cannot have counterweighted they cannot have counterweighted
V-ing perfect
I cannot have been counterweighting you cannot have been counterweighting he cannot have been counterweighting we cannot have been counterweighting you cannot have been counterweighting they cannot have been counterweighting
Interrogative form
Simple form
can I counterweight? can you counterweight? can he counterweight? can we counterweight? can you counterweight? can they counterweight?
V-ing form
can I be counterweighting? can you be counterweighting? can he be counterweighting? can we be counterweighting? can you be counterweighting? can they be counterweighting?
Perfect
can I have counterweighted? can you have counterweighted? can he have counterweighted? can we have counterweighted? can you have counterweighted? can they have counterweighted?
V-ing perfect
can I have been counterweighting? can you have been counterweighting? can he have been counterweighting? can we have been counterweighting? can you have been counterweighting? can they have been counterweighting?
Interro-negative form
Simple form
can I not counterweight? can you not counterweight? can he not counterweight? can we not counterweight? can you not counterweight? can they not counterweight?
V-ing form
can I not be counterweighting? can you not be counterweighting? can he not be counterweighting? can we not be counterweighting? can you not be counterweighting? can they not be counterweighting?
Perfect
can I not have counterweighted? can you not have counterweighted? can he not have counterweighted? can we not have counterweighted? can you not have counterweighted? can they not have counterweighted?
V-ing perfect
can I not have been counterweighting? can you not have been counterweighting? can he not have been counterweighting? can we not have been counterweighting? can you not have been counterweighting? can they not have been counterweighting?