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 must not formulate you must not formulate he must not formulate we must not formulate you must not formulate they must not formulate
Forme en V-ing
I must not be formulating you must not be formulating he must not be formulating we must not be formulating you must not be formulating they must not be formulating
Perfect
I must not have formulated you must not have formulated he must not have formulated we must not have formulated you must not have formulated they must not have formulated
Perfect en V-ing
I must not have been formulating you must not have been formulating he must not have been formulating we must not have been formulating you must not have been formulating they must not 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
must I not formulate? must you not formulate? must he not formulate? must we not formulate? must you not formulate? must they not formulate?
Forme en V-ing
must I not be formulating? must you not be formulating? must he not be formulating? must we not be formulating? must you not be formulating? must they not be formulating?
Perfect
must I not have formulated? must you not have formulated? must he not have formulated? must we not have formulated? must you not have formulated? must they not have formulated?
Perfect en V-ing
must I not have been formulating? must you not have been formulating? must he not have been formulating? must we not have been formulating? must you not have been formulating? must they not have been formulating?