I must fray you must fray he must fray we must fray you must fray they must fray
Forme en V-ing
I must be fraying you must be fraying he must be fraying we must be fraying you must be fraying they must be fraying
Perfect
I must have frayed you must have frayed he must have frayed we must have frayed you must have frayed they must have frayed
Perfect en V-ing
I must have been fraying you must have been fraying he must have been fraying we must have been fraying you must have been fraying they must have been fraying
Négation
Forme simple
I must not fray you must not fray he must not fray we must not fray you must not fray they must not fray
Forme en V-ing
I must not be fraying you must not be fraying he must not be fraying we must not be fraying you must not be fraying they must not be fraying
Perfect
I must not have frayed you must not have frayed he must not have frayed we must not have frayed you must not have frayed they must not have frayed
Perfect en V-ing
I must not have been fraying you must not have been fraying he must not have been fraying we must not have been fraying you must not have been fraying they must not have been fraying
Forme interrogative
Forme simple
must I fray? must you fray? must he fray? must we fray? must you fray? must they fray?
Forme en V-ing
must I be fraying? must you be fraying? must he be fraying? must we be fraying? must you be fraying? must they be fraying?
Perfect
must I have frayed? must you have frayed? must he have frayed? must we have frayed? must you have frayed? must they have frayed?
Perfect en V-ing
must I have been fraying? must you have been fraying? must he have been fraying? must we have been fraying? must you have been fraying? must they have been fraying?
Forme interro-négative
Forme simple
must I not fray? must you not fray? must he not fray? must we not fray? must you not fray? must they not fray?
Forme en V-ing
must I not be fraying? must you not be fraying? must he not be fraying? must we not be fraying? must you not be fraying? must they not be fraying?
Perfect
must I not have frayed? must you not have frayed? must he not have frayed? must we not have frayed? must you not have frayed? must they not have frayed?
Perfect en V-ing
must I not have been fraying? must you not have been fraying? must he not have been fraying? must we not have been fraying? must you not have been fraying? must they not have been fraying?