I must fray you must fray he must fray we must fray you must fray they must fray
Forma con 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
Perfecto
I must have frayed you must have frayed he must have frayed we must have frayed you must have frayed they must have frayed
Perfecto con 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
Negación
Forma simple
I mustn't fray you mustn't fray he mustn't fray we mustn't fray you mustn't fray they mustn't fray
Forma con V-ing
I mustn't be fraying you mustn't be fraying he mustn't be fraying we mustn't be fraying you mustn't be fraying they mustn't be fraying
Perfecto
I mustn't have frayed you mustn't have frayed he mustn't have frayed we mustn't have frayed you mustn't have frayed they mustn't have frayed
Perfecto con V-ing
I mustn't have been fraying you mustn't have been fraying he mustn't have been fraying we mustn't have been fraying you mustn't have been fraying they mustn't have been fraying
Forma interrogativa
Forma simple
must I fray? must you fray? must he fray? must we fray? must you fray? must they fray?
Forma con 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?
Perfecto
must I have frayed? must you have frayed? must he have frayed? must we have frayed? must you have frayed? must they have frayed?
Perfecto con 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?
Forma interro-negativa
Forma simple
mustn't I fray? mustn't you fray? mustn't he fray? mustn't we fray? mustn't you fray? mustn't they fray?
Forma con V-ing
mustn't I be fraying? mustn't you be fraying? mustn't he be fraying? mustn't we be fraying? mustn't you be fraying? mustn't they be fraying?
Perfecto
mustn't I have frayed? mustn't you have frayed? mustn't he have frayed? mustn't we have frayed? mustn't you have frayed? mustn't they have frayed?
Perfecto con V-ing
mustn't I have been fraying? mustn't you have been fraying? mustn't he have been fraying? mustn't we have been fraying? mustn't you have been fraying? mustn't they have been fraying?