Conjugación del verbo inglés
COULD SECERN

Verbo regular: secern - secerned - secerned

Afirmación

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

Negación

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

Forma interrogativa

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

Forma interro-negativa

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