I must grouch you must grouch he must grouch we must grouch you must grouch they must grouch
Forme en V-ing
I must be grouching you must be grouching he must be grouching we must be grouching you must be grouching they must be grouching
Perfect
I must have grouched you must have grouched he must have grouched we must have grouched you must have grouched they must have grouched
Perfect en V-ing
I must have been grouching you must have been grouching he must have been grouching we must have been grouching you must have been grouching they must have been grouching
Négation
Forme simple
I must not grouch you must not grouch he must not grouch we must not grouch you must not grouch they must not grouch
Forme en V-ing
I must not be grouching you must not be grouching he must not be grouching we must not be grouching you must not be grouching they must not be grouching
Perfect
I must not have grouched you must not have grouched he must not have grouched we must not have grouched you must not have grouched they must not have grouched
Perfect en V-ing
I must not have been grouching you must not have been grouching he must not have been grouching we must not have been grouching you must not have been grouching they must not have been grouching
Forme interrogative
Forme simple
must I grouch? must you grouch? must he grouch? must we grouch? must you grouch? must they grouch?
Forme en V-ing
must I be grouching? must you be grouching? must he be grouching? must we be grouching? must you be grouching? must they be grouching?
Perfect
must I have grouched? must you have grouched? must he have grouched? must we have grouched? must you have grouched? must they have grouched?
Perfect en V-ing
must I have been grouching? must you have been grouching? must he have been grouching? must we have been grouching? must you have been grouching? must they have been grouching?
Forme interro-négative
Forme simple
must I not grouch? must you not grouch? must he not grouch? must we not grouch? must you not grouch? must they not grouch?
Forme en V-ing
must I not be grouching? must you not be grouching? must he not be grouching? must we not be grouching? must you not be grouching? must they not be grouching?
Perfect
must I not have grouched? must you not have grouched? must he not have grouched? must we not have grouched? must you not have grouched? must they not have grouched?
Perfect en V-ing
must I not have been grouching? must you not have been grouching? must he not have been grouching? must we not have been grouching? must you not have been grouching? must they not have been grouching?