I can forsake you can forsake he can forsake we can forsake you can forsake they can forsake
V-ing form
I can be forsaking you can be forsaking he can be forsaking we can be forsaking you can be forsaking they can be forsaking
Perfect
I can have forsaken you can have forsaken he can have forsaken we can have forsaken you can have forsaken they can have forsaken
V-ing perfect
I can have been forsaking you can have been forsaking he can have been forsaking we can have been forsaking you can have been forsaking they can have been forsaking
Negation
Simple form
I cannot forsake you cannot forsake he cannot forsake we cannot forsake you cannot forsake they cannot forsake
V-ing form
I cannot be forsaking you cannot be forsaking he cannot be forsaking we cannot be forsaking you cannot be forsaking they cannot be forsaking
Perfect
I cannot have forsaken you cannot have forsaken he cannot have forsaken we cannot have forsaken you cannot have forsaken they cannot have forsaken
V-ing perfect
I cannot have been forsaking you cannot have been forsaking he cannot have been forsaking we cannot have been forsaking you cannot have been forsaking they cannot have been forsaking
Interrogative form
Simple form
can I forsake? can you forsake? can he forsake? can we forsake? can you forsake? can they forsake?
V-ing form
can I be forsaking? can you be forsaking? can he be forsaking? can we be forsaking? can you be forsaking? can they be forsaking?
Perfect
can I have forsaken? can you have forsaken? can he have forsaken? can we have forsaken? can you have forsaken? can they have forsaken?
V-ing perfect
can I have been forsaking? can you have been forsaking? can he have been forsaking? can we have been forsaking? can you have been forsaking? can they have been forsaking?
Interro-negative form
Simple form
can I not forsake? can you not forsake? can he not forsake? can we not forsake? can you not forsake? can they not forsake?
V-ing form
can I not be forsaking? can you not be forsaking? can he not be forsaking? can we not be forsaking? can you not be forsaking? can they not be forsaking?
Perfect
can I not have forsaken? can you not have forsaken? can he not have forsaken? can we not have forsaken? can you not have forsaken? can they not have forsaken?
V-ing perfect
can I not have been forsaking? can you not have been forsaking? can he not have been forsaking? can we not have been forsaking? can you not have been forsaking? can they not have been forsaking?