I must underwithhold you must underwithhold he must underwithhold we must underwithhold you must underwithhold they must underwithhold
Forme en V-ing
I must be underwithholding you must be underwithholding he must be underwithholding we must be underwithholding you must be underwithholding they must be underwithholding
Perfect
I must have underwithholded you must have underwithholded he must have underwithholded we must have underwithholded you must have underwithholded they must have underwithholded
Perfect en V-ing
I must have been underwithholding you must have been underwithholding he must have been underwithholding we must have been underwithholding you must have been underwithholding they must have been underwithholding
Négation
Forme simple
I must not underwithhold you must not underwithhold he must not underwithhold we must not underwithhold you must not underwithhold they must not underwithhold
Forme en V-ing
I must not be underwithholding you must not be underwithholding he must not be underwithholding we must not be underwithholding you must not be underwithholding they must not be underwithholding
Perfect
I must not have underwithholded you must not have underwithholded he must not have underwithholded we must not have underwithholded you must not have underwithholded they must not have underwithholded
Perfect en V-ing
I must not have been underwithholding you must not have been underwithholding he must not have been underwithholding we must not have been underwithholding you must not have been underwithholding they must not have been underwithholding
Forme interrogative
Forme simple
must I underwithhold? must you underwithhold? must he underwithhold? must we underwithhold? must you underwithhold? must they underwithhold?
Forme en V-ing
must I be underwithholding? must you be underwithholding? must he be underwithholding? must we be underwithholding? must you be underwithholding? must they be underwithholding?
Perfect
must I have underwithholded? must you have underwithholded? must he have underwithholded? must we have underwithholded? must you have underwithholded? must they have underwithholded?
Perfect en V-ing
must I have been underwithholding? must you have been underwithholding? must he have been underwithholding? must we have been underwithholding? must you have been underwithholding? must they have been underwithholding?
Forme interro-négative
Forme simple
must I not underwithhold? must you not underwithhold? must he not underwithhold? must we not underwithhold? must you not underwithhold? must they not underwithhold?
Forme en V-ing
must I not be underwithholding? must you not be underwithholding? must he not be underwithholding? must we not be underwithholding? must you not be underwithholding? must they not be underwithholding?
Perfect
must I not have underwithholded? must you not have underwithholded? must he not have underwithholded? must we not have underwithholded? must you not have underwithholded? must they not have underwithholded?
Perfect en V-ing
must I not have been underwithholding? must you not have been underwithholding? must he not have been underwithholding? must we not have been underwithholding? must you not have been underwithholding? must they not have been underwithholding?