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 can't aim you can't aim she 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 she 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 she 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 she 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 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't I aim? can't you aim? can't she 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 she 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 she 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 she have been aiming? can't we have been aiming? can't you have been aiming? can't they have been aiming?