Conjugación del verbo inglés
MUST SECERN

Verbo regular: secern - secerned - secerned

Afirmación

Forma simple	Forma con V-ing
I must secern you must secern he must secern we must secern you must secern they must secern	I must be secerning you must be secerning he must be secerning we must be secerning you must be secerning they must be secerning
Perfecto	Perfecto con V-ing
I must have secerned you must have secerned he must have secerned we must have secerned you must have secerned they must have secerned	I must have been secerning you must have been secerning he must have been secerning we must have been secerning you must have been secerning they must have been secerning

Negación

Forma simple	Forma con V-ing
I mustn't secern you mustn't secern he mustn't secern we mustn't secern you mustn't secern they mustn't secern	I mustn't be secerning you mustn't be secerning he mustn't be secerning we mustn't be secerning you mustn't be secerning they mustn't be secerning
Perfecto	Perfecto con V-ing
I mustn't have secerned you mustn't have secerned he mustn't have secerned we mustn't have secerned you mustn't have secerned they mustn't have secerned	I mustn't have been secerning you mustn't have been secerning he mustn't have been secerning we mustn't have been secerning you mustn't have been secerning they mustn't have been secerning

Forma interrogativa

Forma simple	Forma con V-ing
must I secern? must you secern? must he secern? must we secern? must you secern? must they secern?	must I be secerning? must you be secerning? must he be secerning? must we be secerning? must you be secerning? must they be secerning?
Perfecto	Perfecto con V-ing
must I have secerned? must you have secerned? must he have secerned? must we have secerned? must you have secerned? must they have secerned?	must I have been secerning? must you have been secerning? must he have been secerning? must we have been secerning? must you have been secerning? must they have been secerning?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I secern? mustn't you secern? mustn't he secern? mustn't we secern? mustn't you secern? mustn't they secern?	mustn't I be secerning? mustn't you be secerning? mustn't he be secerning? mustn't we be secerning? mustn't you be secerning? mustn't they be secerning?
Perfecto	Perfecto con V-ing
mustn't I have secerned? mustn't you have secerned? mustn't he have secerned? mustn't we have secerned? mustn't you have secerned? mustn't they have secerned?	mustn't I have been secerning? mustn't you have been secerning? mustn't he have been secerning? mustn't we have been secerning? mustn't you have been secerning? mustn't they have been secerning?