I can demand you can demand he can demand we can demand you can demand they can demand
V-ing form
I can be demanding you can be demanding he can be demanding we can be demanding you can be demanding they can be demanding
Perfect
I can have demanded you can have demanded he can have demanded we can have demanded you can have demanded they can have demanded
V-ing perfect
I can have been demanding you can have been demanding he can have been demanding we can have been demanding you can have been demanding they can have been demanding
Negation
Simple form
I cannot demand you cannot demand he cannot demand we cannot demand you cannot demand they cannot demand
V-ing form
I cannot be demanding you cannot be demanding he cannot be demanding we cannot be demanding you cannot be demanding they cannot be demanding
Perfect
I cannot have demanded you cannot have demanded he cannot have demanded we cannot have demanded you cannot have demanded they cannot have demanded
V-ing perfect
I cannot have been demanding you cannot have been demanding he cannot have been demanding we cannot have been demanding you cannot have been demanding they cannot have been demanding
Interrogative form
Simple form
can I demand? can you demand? can he demand? can we demand? can you demand? can they demand?
V-ing form
can I be demanding? can you be demanding? can he be demanding? can we be demanding? can you be demanding? can they be demanding?
Perfect
can I have demanded? can you have demanded? can he have demanded? can we have demanded? can you have demanded? can they have demanded?
V-ing perfect
can I have been demanding? can you have been demanding? can he have been demanding? can we have been demanding? can you have been demanding? can they have been demanding?
Interro-negative form
Simple form
can I not demand? can you not demand? can he not demand? can we not demand? can you not demand? can they not demand?
V-ing form
can I not be demanding? can you not be demanding? can he not be demanding? can we not be demanding? can you not be demanding? can they not be demanding?
Perfect
can I not have demanded? can you not have demanded? can he not have demanded? can we not have demanded? can you not have demanded? can they not have demanded?
V-ing perfect
can I not have been demanding? can you not have been demanding? can he not have been demanding? can we not have been demanding? can you not have been demanding? can they not have been demanding?