I must ensure you must ensure he must ensure we must ensure you must ensure they must ensure
Forme en V-ing
I must be ensuring you must be ensuring he must be ensuring we must be ensuring you must be ensuring they must be ensuring
Perfect
I must have ensured you must have ensured he must have ensured we must have ensured you must have ensured they must have ensured
Perfect en V-ing
I must have been ensuring you must have been ensuring he must have been ensuring we must have been ensuring you must have been ensuring they must have been ensuring
Négation
Forme simple
I must not ensure you must not ensure he must not ensure we must not ensure you must not ensure they must not ensure
Forme en V-ing
I must not be ensuring you must not be ensuring he must not be ensuring we must not be ensuring you must not be ensuring they must not be ensuring
Perfect
I must not have ensured you must not have ensured he must not have ensured we must not have ensured you must not have ensured they must not have ensured
Perfect en V-ing
I must not have been ensuring you must not have been ensuring he must not have been ensuring we must not have been ensuring you must not have been ensuring they must not have been ensuring
Forme interrogative
Forme simple
must I ensure? must you ensure? must he ensure? must we ensure? must you ensure? must they ensure?
Forme en V-ing
must I be ensuring? must you be ensuring? must he be ensuring? must we be ensuring? must you be ensuring? must they be ensuring?
Perfect
must I have ensured? must you have ensured? must he have ensured? must we have ensured? must you have ensured? must they have ensured?
Perfect en V-ing
must I have been ensuring? must you have been ensuring? must he have been ensuring? must we have been ensuring? must you have been ensuring? must they have been ensuring?
Forme interro-négative
Forme simple
must I not ensure? must you not ensure? must he not ensure? must we not ensure? must you not ensure? must they not ensure?
Forme en V-ing
must I not be ensuring? must you not be ensuring? must he not be ensuring? must we not be ensuring? must you not be ensuring? must they not be ensuring?
Perfect
must I not have ensured? must you not have ensured? must he not have ensured? must we not have ensured? must you not have ensured? must they not have ensured?
Perfect en V-ing
must I not have been ensuring? must you not have been ensuring? must he not have been ensuring? must we not have been ensuring? must you not have been ensuring? must they not have been ensuring?