I can aim you can aim she can aim we can aim you can aim they can aim
V-ing form
I can be aiming you can be aiming she can be aiming we can be aiming you can be aiming they can be aiming
Perfect
I can have aimed you can have aimed she can have aimed we can have aimed you can have aimed they can have aimed
V-ing perfect
I can have been aiming you can have been aiming she can have been aiming we can have been aiming you can have been aiming they can have been aiming
Negation
Simple form
I cannot aim you cannot aim she cannot aim we cannot aim you cannot aim they cannot aim
V-ing form
I cannot be aiming you cannot be aiming she cannot be aiming we cannot be aiming you cannot be aiming they cannot be aiming
Perfect
I cannot have aimed you cannot have aimed she cannot have aimed we cannot have aimed you cannot have aimed they cannot have aimed
V-ing perfect
I cannot have been aiming you cannot have been aiming she cannot have been aiming we cannot have been aiming you cannot have been aiming they cannot have been aiming
Interrogative form
Simple form
can I aim? can you aim? can she aim? can we aim? can you aim? can they aim?
V-ing form
can I be aiming? can you be aiming? can she be aiming? can we be aiming? can you be aiming? can they be aiming?
Perfect
can I have aimed? can you have aimed? can she have aimed? can we have aimed? can you have aimed? can they have aimed?
V-ing perfect
can I have been aiming? can you have been aiming? can she have been aiming? can we have been aiming? can you have been aiming? can they have been aiming?
Interro-negative form
Simple form
can I not aim? can you not aim? can she not aim? can we not aim? can you not aim? can they not aim?
V-ing form
can I not be aiming? can you not be aiming? can she not be aiming? can we not be aiming? can you not be aiming? can they not be aiming?
Perfect
can I not have aimed? can you not have aimed? can she not have aimed? can we not have aimed? can you not have aimed? can they not have aimed?
V-ing perfect
can I not have been aiming? can you not have been aiming? can she not have been aiming? can we not have been aiming? can you not have been aiming? can they not have been aiming?