I can discount you can discount he can discount we can discount you can discount they can discount
V-ing form
I can be discounting you can be discounting he can be discounting we can be discounting you can be discounting they can be discounting
Perfect
I can have discounted you can have discounted he can have discounted we can have discounted you can have discounted they can have discounted
V-ing perfect
I can have been discounting you can have been discounting he can have been discounting we can have been discounting you can have been discounting they can have been discounting
Negation
Simple form
I cannot discount you cannot discount he cannot discount we cannot discount you cannot discount they cannot discount
V-ing form
I cannot be discounting you cannot be discounting he cannot be discounting we cannot be discounting you cannot be discounting they cannot be discounting
Perfect
I cannot have discounted you cannot have discounted he cannot have discounted we cannot have discounted you cannot have discounted they cannot have discounted
V-ing perfect
I cannot have been discounting you cannot have been discounting he cannot have been discounting we cannot have been discounting you cannot have been discounting they cannot have been discounting
Interrogative form
Simple form
can I discount? can you discount? can he discount? can we discount? can you discount? can they discount?
V-ing form
can I be discounting? can you be discounting? can he be discounting? can we be discounting? can you be discounting? can they be discounting?
Perfect
can I have discounted? can you have discounted? can he have discounted? can we have discounted? can you have discounted? can they have discounted?
V-ing perfect
can I have been discounting? can you have been discounting? can he have been discounting? can we have been discounting? can you have been discounting? can they have been discounting?
Interro-negative form
Simple form
can I not discount? can you not discount? can he not discount? can we not discount? can you not discount? can they not discount?
V-ing form
can I not be discounting? can you not be discounting? can he not be discounting? can we not be discounting? can you not be discounting? can they not be discounting?
Perfect
can I not have discounted? can you not have discounted? can he not have discounted? can we not have discounted? can you not have discounted? can they not have discounted?
V-ing perfect
can I not have been discounting? can you not have been discounting? can he not have been discounting? can we not have been discounting? can you not have been discounting? can they not have been discounting?