I can extort you can extort he can extort we can extort you can extort they can extort
V-ing form
I can be extorting you can be extorting he can be extorting we can be extorting you can be extorting they can be extorting
Perfect
I can have extorted you can have extorted he can have extorted we can have extorted you can have extorted they can have extorted
V-ing perfect
I can have been extorting you can have been extorting he can have been extorting we can have been extorting you can have been extorting they can have been extorting
Negation
Simple form
I can't extort you can't extort he can't extort we can't extort you can't extort they can't extort
V-ing form
I can't be extorting you can't be extorting he can't be extorting we can't be extorting you can't be extorting they can't be extorting
Perfect
I can't have extorted you can't have extorted he can't have extorted we can't have extorted you can't have extorted they can't have extorted
V-ing perfect
I can't have been extorting you can't have been extorting he can't have been extorting we can't have been extorting you can't have been extorting they can't have been extorting
Interrogative form
Simple form
can I extort? can you extort? can he extort? can we extort? can you extort? can they extort?
V-ing form
can I be extorting? can you be extorting? can he be extorting? can we be extorting? can you be extorting? can they be extorting?
Perfect
can I have extorted? can you have extorted? can he have extorted? can we have extorted? can you have extorted? can they have extorted?
V-ing perfect
can I have been extorting? can you have been extorting? can he have been extorting? can we have been extorting? can you have been extorting? can they have been extorting?
Interro-negative form
Simple form
can't I extort? can't you extort? can't he extort? can't we extort? can't you extort? can't they extort?
V-ing form
can't I be extorting? can't you be extorting? can't he be extorting? can't we be extorting? can't you be extorting? can't they be extorting?
Perfect
can't I have extorted? can't you have extorted? can't he have extorted? can't we have extorted? can't you have extorted? can't they have extorted?
V-ing perfect
can't I have been extorting? can't you have been extorting? can't he have been extorting? can't we have been extorting? can't you have been extorting? can't they have been extorting?