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 can't shake you can't shake he can't shake we can't shake you can't shake they can't shake
V-ing form
I can't be shaking you can't be shaking he can't be shaking we can't be shaking you can't be shaking they can't be shaking
Perfect
I can't have shaken you can't have shaken he can't have shaken we can't have shaken you can't have shaken they can't have shaken
V-ing perfect
I can't have been shaking you can't have been shaking he can't have been shaking we can't have been shaking you can't have been shaking they can't 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't I shake? can't you shake? can't he shake? can't we shake? can't you shake? can't they shake?
V-ing form
can't I be shaking? can't you be shaking? can't he be shaking? can't we be shaking? can't you be shaking? can't they be shaking?
Perfect
can't I have shaken? can't you have shaken? can't he have shaken? can't we have shaken? can't you have shaken? can't they have shaken?
V-ing perfect
can't I have been shaking? can't you have been shaking? can't he have been shaking? can't we have been shaking? can't you have been shaking? can't they have been shaking?