I can aim you can aim he can aim we can aim you can aim they can aim
V-ing form
I can be aiming you can be aiming he can be aiming we can be aiming you can be aiming they can be aiming
Perfect
I can have aimed you can have aimed he 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 he 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 he cannot aim we cannot aim you cannot aim they cannot aim
V-ing form
I cannot be aiming you cannot be aiming he cannot be aiming we cannot be aiming you cannot be aiming they cannot be aiming
Perfect
I cannot have aimed you cannot have aimed he 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 he 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 he aim? can we aim? can you aim? can they aim?
V-ing form
can I be aiming? can you be aiming? can he be aiming? can we be aiming? can you be aiming? can they be aiming?
Perfect
can I have aimed? can you have aimed? can he 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 he 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 he 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 he 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 he 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 he not have been aiming? can we not have been aiming? can you not have been aiming? can they not have been aiming?