could secern
Verbe régulier : secern - secerned- secerned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could secern
you could secern
she could secern
we could secern
you could secern
they could secern 	I could be secerning
you could be secerning
she could be secerning
we could be secerning
you could be secerning
they could be secerning	I could have secerned
you could have secerned
she 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
she could have been secerning
we could have been secerning
you could have been secerning
they could have been secerning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't secern
you couldn't secern
she 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
she couldn't be secerning
we couldn't be secerning
you couldn't be secerning
they couldn't be secerning	I couldn't have secerned
you couldn't have secerned
she 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
she couldn't have been secerning
we couldn't have been secerning
you couldn't have been secerning
they couldn't have been secerning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I secern?
could you secern?
could she secern?
could we secern?
could you secern?
could they secern? 	could I be secerning?
could you be secerning?
could she be secerning?
could we be secerning?
could you be secerning?
could they be secerning? 	could I have secerned?
could you have secerned?
could she 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 she have been secerning?
could we have been secerning?
could you have been secerning?
could they have been secerning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I secern?
couldn't you secern?
couldn't she 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 she be secerning?
couldn't we be secerning?
couldn't you be secerning?
couldn't they be secerning? 	couldn't I have secerned?
couldn't you have secerned?
couldn't she 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 she have been secerning?
couldn't we have been secerning?
couldn't you have been secerning?
couldn't they have been secerning?