I must encase you must encase he must encase we must encase you must encase they must encase
Forme en V-ing
I must be encasing you must be encasing he must be encasing we must be encasing you must be encasing they must be encasing
Perfect
I must have encased you must have encased he must have encased we must have encased you must have encased they must have encased
Perfect en V-ing
I must have been encasing you must have been encasing he must have been encasing we must have been encasing you must have been encasing they must have been encasing
Négation
Forme simple
I mustn't encase you mustn't encase he mustn't encase we mustn't encase you mustn't encase they mustn't encase
Forme en V-ing
I mustn't be encasing you mustn't be encasing he mustn't be encasing we mustn't be encasing you mustn't be encasing they mustn't be encasing
Perfect
I mustn't have encased you mustn't have encased he mustn't have encased we mustn't have encased you mustn't have encased they mustn't have encased
Perfect en V-ing
I mustn't have been encasing you mustn't have been encasing he mustn't have been encasing we mustn't have been encasing you mustn't have been encasing they mustn't have been encasing
Forme interrogative
Forme simple
must I encase? must you encase? must he encase? must we encase? must you encase? must they encase?
Forme en V-ing
must I be encasing? must you be encasing? must he be encasing? must we be encasing? must you be encasing? must they be encasing?
Perfect
must I have encased? must you have encased? must he have encased? must we have encased? must you have encased? must they have encased?
Perfect en V-ing
must I have been encasing? must you have been encasing? must he have been encasing? must we have been encasing? must you have been encasing? must they have been encasing?
Forme interro-négative
Forme simple
mustn't I encase? mustn't you encase? mustn't he encase? mustn't we encase? mustn't you encase? mustn't they encase?
Forme en V-ing
mustn't I be encasing? mustn't you be encasing? mustn't he be encasing? mustn't we be encasing? mustn't you be encasing? mustn't they be encasing?
Perfect
mustn't I have encased? mustn't you have encased? mustn't he have encased? mustn't we have encased? mustn't you have encased? mustn't they have encased?
Perfect en V-ing
mustn't I have been encasing? mustn't you have been encasing? mustn't he have been encasing? mustn't we have been encasing? mustn't you have been encasing? mustn't they have been encasing?