I can demand you can demand she can demand we can demand you can demand they can demand
V-ing form
I can be demanding you can be demanding she can be demanding we can be demanding you can be demanding they can be demanding
Perfect
I can have demanded you can have demanded she 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 she 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 she cannot demand we cannot demand you cannot demand they cannot demand
V-ing form
I cannot be demanding you cannot be demanding she cannot be demanding we cannot be demanding you cannot be demanding they cannot be demanding
Perfect
I cannot have demanded you cannot have demanded she 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 she 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 she demand? can we demand? can you demand? can they demand?
V-ing form
can I be demanding? can you be demanding? can she be demanding? can we be demanding? can you be demanding? can they be demanding?
Perfect
can I have demanded? can you have demanded? can she 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 she 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 she 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 she 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 she 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 she not have been demanding? can we not have been demanding? can you not have been demanding? can they not have been demanding?