English verb conjugation
MUST ENSURE

Regular verb: ensure - ensured - ensured

Affirmation

Simple form	V-ing form
I must ensure you must ensure he must ensure we must ensure you must ensure they must ensure	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	V-ing 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	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

Negation

Simple form	V-ing form
I mustn't ensure you mustn't ensure he mustn't ensure we mustn't ensure you mustn't ensure they mustn't ensure	I mustn't be ensuring you mustn't be ensuring he mustn't be ensuring we mustn't be ensuring you mustn't be ensuring they mustn't be ensuring
Perfect	V-ing perfect
I mustn't have ensured you mustn't have ensured he mustn't have ensured we mustn't have ensured you mustn't have ensured they mustn't have ensured	I mustn't have been ensuring you mustn't have been ensuring he mustn't have been ensuring we mustn't have been ensuring you mustn't have been ensuring they mustn't have been ensuring

Interrogative form

Simple form	V-ing form
must I ensure? must you ensure? must he ensure? must we ensure? must you ensure? must they ensure?	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	V-ing 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?	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?

Interro-negative form

Simple form	V-ing form
mustn't I ensure? mustn't you ensure? mustn't he ensure? mustn't we ensure? mustn't you ensure? mustn't they ensure?	mustn't I be ensuring? mustn't you be ensuring? mustn't he be ensuring? mustn't we be ensuring? mustn't you be ensuring? mustn't they be ensuring?
Perfect	V-ing perfect
mustn't I have ensured? mustn't you have ensured? mustn't he have ensured? mustn't we have ensured? mustn't you have ensured? mustn't they have ensured?	mustn't I have been ensuring? mustn't you have been ensuring? mustn't he have been ensuring? mustn't we have been ensuring? mustn't you have been ensuring? mustn't they have been ensuring?