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