I can retake you can retake he can retake we can retake you can retake they can retake
V-ing form
I can be retaking you can be retaking he can be retaking we can be retaking you can be retaking they can be retaking
Perfect
I can have retaken you can have retaken he can have retaken we can have retaken you can have retaken they can have retaken
V-ing perfect
I can have been retaking you can have been retaking he can have been retaking we can have been retaking you can have been retaking they can have been retaking
Negation
Simple form
I cannot retake you cannot retake he cannot retake we cannot retake you cannot retake they cannot retake
V-ing form
I cannot be retaking you cannot be retaking he cannot be retaking we cannot be retaking you cannot be retaking they cannot be retaking
Perfect
I cannot have retaken you cannot have retaken he cannot have retaken we cannot have retaken you cannot have retaken they cannot have retaken
V-ing perfect
I cannot have been retaking you cannot have been retaking he cannot have been retaking we cannot have been retaking you cannot have been retaking they cannot have been retaking
Interrogative form
Simple form
can I retake? can you retake? can he retake? can we retake? can you retake? can they retake?
V-ing form
can I be retaking? can you be retaking? can he be retaking? can we be retaking? can you be retaking? can they be retaking?
Perfect
can I have retaken? can you have retaken? can he have retaken? can we have retaken? can you have retaken? can they have retaken?
V-ing perfect
can I have been retaking? can you have been retaking? can he have been retaking? can we have been retaking? can you have been retaking? can they have been retaking?
Interro-negative form
Simple form
can I not retake? can you not retake? can he not retake? can we not retake? can you not retake? can they not retake?
V-ing form
can I not be retaking? can you not be retaking? can he not be retaking? can we not be retaking? can you not be retaking? can they not be retaking?
Perfect
can I not have retaken? can you not have retaken? can he not have retaken? can we not have retaken? can you not have retaken? can they not have retaken?
V-ing perfect
can I not have been retaking? can you not have been retaking? can he not have been retaking? can we not have been retaking? can you not have been retaking? can they not have been retaking?