I can downgrade you can downgrade he can downgrade we can downgrade you can downgrade they can downgrade
Forme en V-ing
I can be downgrading you can be downgrading he can be downgrading we can be downgrading you can be downgrading they can be downgrading
Perfect
I can have downgraded you can have downgraded he can have downgraded we can have downgraded you can have downgraded they can have downgraded
Perfect en V-ing
I can have been downgrading you can have been downgrading he can have been downgrading we can have been downgrading you can have been downgrading they can have been downgrading
Négation
Forme simple
I cannot downgrade you cannot downgrade he cannot downgrade we cannot downgrade you cannot downgrade they cannot downgrade
Forme en V-ing
I cannot be downgrading you cannot be downgrading he cannot be downgrading we cannot be downgrading you cannot be downgrading they cannot be downgrading
Perfect
I cannot have downgraded you cannot have downgraded he cannot have downgraded we cannot have downgraded you cannot have downgraded they cannot have downgraded
Perfect en V-ing
I cannot have been downgrading you cannot have been downgrading he cannot have been downgrading we cannot have been downgrading you cannot have been downgrading they cannot have been downgrading
Forme interrogative
Forme simple
can I downgrade? can you downgrade? can he downgrade? can we downgrade? can you downgrade? can they downgrade?
Forme en V-ing
can I be downgrading? can you be downgrading? can he be downgrading? can we be downgrading? can you be downgrading? can they be downgrading?
Perfect
can I have downgraded? can you have downgraded? can he have downgraded? can we have downgraded? can you have downgraded? can they have downgraded?
Perfect en V-ing
can I have been downgrading? can you have been downgrading? can he have been downgrading? can we have been downgrading? can you have been downgrading? can they have been downgrading?
Forme interro-négative
Forme simple
can I not downgrade? can you not downgrade? can he not downgrade? can we not downgrade? can you not downgrade? can they not downgrade?
Forme en V-ing
can I not be downgrading? can you not be downgrading? can he not be downgrading? can we not be downgrading? can you not be downgrading? can they not be downgrading?
Perfect
can I not have downgraded? can you not have downgraded? can he not have downgraded? can we not have downgraded? can you not have downgraded? can they not have downgraded?
Perfect en V-ing
can I not have been downgrading? can you not have been downgrading? can he not have been downgrading? can we not have been downgrading? can you not have been downgrading? can they not have been downgrading?