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