I can im you can im he can im we can im you can im they can im
V-ing form
I can be iming you can be iming he can be iming we can be iming you can be iming they can be iming
Perfect
I can have imed you can have imed he can have imed we can have imed you can have imed they can have imed
V-ing perfect
I can have been iming you can have been iming he can have been iming we can have been iming you can have been iming they can have been iming
Negation
Simple form
I cannot im you cannot im he cannot im we cannot im you cannot im they cannot im
V-ing form
I cannot be iming you cannot be iming he cannot be iming we cannot be iming you cannot be iming they cannot be iming
Perfect
I cannot have imed you cannot have imed he cannot have imed we cannot have imed you cannot have imed they cannot have imed
V-ing perfect
I cannot have been iming you cannot have been iming he cannot have been iming we cannot have been iming you cannot have been iming they cannot have been iming
Interrogative form
Simple form
can I im? can you im? can he im? can we im? can you im? can they im?
V-ing form
can I be iming? can you be iming? can he be iming? can we be iming? can you be iming? can they be iming?
Perfect
can I have imed? can you have imed? can he have imed? can we have imed? can you have imed? can they have imed?
V-ing perfect
can I have been iming? can you have been iming? can he have been iming? can we have been iming? can you have been iming? can they have been iming?
Interro-negative form
Simple form
can I not im? can you not im? can he not im? can we not im? can you not im? can they not im?
V-ing form
can I not be iming? can you not be iming? can he not be iming? can we not be iming? can you not be iming? can they not be iming?
Perfect
can I not have imed? can you not have imed? can he not have imed? can we not have imed? can you not have imed? can they not have imed?
V-ing perfect
can I not have been iming? can you not have been iming? can he not have been iming? can we not have been iming? can you not have been iming? can they not have been iming?