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 can't aim you can't aim he can't aim we can't aim you can't aim they can't aim
V-ing form
I can't be aiming you can't be aiming he can't be aiming we can't be aiming you can't be aiming they can't be aiming
Perfect
I can't have aimed you can't have aimed he can't have aimed we can't have aimed you can't have aimed they can't have aimed
V-ing perfect
I can't have been aiming you can't have been aiming he can't have been aiming we can't have been aiming you can't have been aiming they can't 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't I aim? can't you aim? can't he aim? can't we aim? can't you aim? can't they aim?
V-ing form
can't I be aiming? can't you be aiming? can't he be aiming? can't we be aiming? can't you be aiming? can't they be aiming?
Perfect
can't I have aimed? can't you have aimed? can't he have aimed? can't we have aimed? can't you have aimed? can't they have aimed?
V-ing perfect
can't I have been aiming? can't you have been aiming? can't he have been aiming? can't we have been aiming? can't you have been aiming? can't they have been aiming?