I can shake you can shake he can shake we can shake you can shake they can shake
V-ing form
I can be shaking you can be shaking he can be shaking we can be shaking you can be shaking they can be shaking
Perfect
I can have shaken you can have shaken he can have shaken we can have shaken you can have shaken they can have shaken
V-ing perfect
I can have been shaking you can have been shaking he can have been shaking we can have been shaking you can have been shaking they can have been shaking
Negation
Simple form
I cannot shake you cannot shake he cannot shake we cannot shake you cannot shake they cannot shake
V-ing form
I cannot be shaking you cannot be shaking he cannot be shaking we cannot be shaking you cannot be shaking they cannot be shaking
Perfect
I cannot have shaken you cannot have shaken he cannot have shaken we cannot have shaken you cannot have shaken they cannot have shaken
V-ing perfect
I cannot have been shaking you cannot have been shaking he cannot have been shaking we cannot have been shaking you cannot have been shaking they cannot have been shaking
Interrogative form
Simple form
can I shake? can you shake? can he shake? can we shake? can you shake? can they shake?
V-ing form
can I be shaking? can you be shaking? can he be shaking? can we be shaking? can you be shaking? can they be shaking?
Perfect
can I have shaken? can you have shaken? can he have shaken? can we have shaken? can you have shaken? can they have shaken?
V-ing perfect
can I have been shaking? can you have been shaking? can he have been shaking? can we have been shaking? can you have been shaking? can they have been shaking?
Interro-negative form
Simple form
can I not shake? can you not shake? can he not shake? can we not shake? can you not shake? can they not shake?
V-ing form
can I not be shaking? can you not be shaking? can he not be shaking? can we not be shaking? can you not be shaking? can they not be shaking?
Perfect
can I not have shaken? can you not have shaken? can he not have shaken? can we not have shaken? can you not have shaken? can they not have shaken?
V-ing perfect
can I not have been shaking? can you not have been shaking? can he not have been shaking? can we not have been shaking? can you not have been shaking? can they not have been shaking?