I can endow you can endow he can endow we can endow you can endow they can endow
V-ing form
I can be endowing you can be endowing he can be endowing we can be endowing you can be endowing they can be endowing
Perfect
I can have endowed you can have endowed he can have endowed we can have endowed you can have endowed they can have endowed
V-ing perfect
I can have been endowing you can have been endowing he can have been endowing we can have been endowing you can have been endowing they can have been endowing
Negation
Simple form
I cannot endow you cannot endow he cannot endow we cannot endow you cannot endow they cannot endow
V-ing form
I cannot be endowing you cannot be endowing he cannot be endowing we cannot be endowing you cannot be endowing they cannot be endowing
Perfect
I cannot have endowed you cannot have endowed he cannot have endowed we cannot have endowed you cannot have endowed they cannot have endowed
V-ing perfect
I cannot have been endowing you cannot have been endowing he cannot have been endowing we cannot have been endowing you cannot have been endowing they cannot have been endowing
Interrogative form
Simple form
can I endow? can you endow? can he endow? can we endow? can you endow? can they endow?
V-ing form
can I be endowing? can you be endowing? can he be endowing? can we be endowing? can you be endowing? can they be endowing?
Perfect
can I have endowed? can you have endowed? can he have endowed? can we have endowed? can you have endowed? can they have endowed?
V-ing perfect
can I have been endowing? can you have been endowing? can he have been endowing? can we have been endowing? can you have been endowing? can they have been endowing?
Interro-negative form
Simple form
can I not endow? can you not endow? can he not endow? can we not endow? can you not endow? can they not endow?
V-ing form
can I not be endowing? can you not be endowing? can he not be endowing? can we not be endowing? can you not be endowing? can they not be endowing?
Perfect
can I not have endowed? can you not have endowed? can he not have endowed? can we not have endowed? can you not have endowed? can they not have endowed?
V-ing perfect
can I not have been endowing? can you not have been endowing? can he not have been endowing? can we not have been endowing? can you not have been endowing? can they not have been endowing?