could symmetrise
Verbe régulier : symmetrise - symmetrised- symmetrised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could symmetrise
you could symmetrise
he could symmetrise
we could symmetrise
you could symmetrise
they could symmetrise 	I could be symmetrising
you could be symmetrising
he could be symmetrising
we could be symmetrising
you could be symmetrising
they could be symmetrising	I could have symmetrised
you could have symmetrised
he could have symmetrised
we could have symmetrised
you could have symmetrised
they could have symmetrised	I could have been symmetrising
you could have been symmetrising
he could have been symmetrising
we could have been symmetrising
you could have been symmetrising
they could have been symmetrising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't symmetrise
you couldn't symmetrise
he couldn't symmetrise
we couldn't symmetrise
you couldn't symmetrise
they couldn't symmetrise 	I couldn't be symmetrising
you couldn't be symmetrising
he couldn't be symmetrising
we couldn't be symmetrising
you couldn't be symmetrising
they couldn't be symmetrising	I couldn't have symmetrised
you couldn't have symmetrised
he couldn't have symmetrised
we couldn't have symmetrised
you couldn't have symmetrised
they couldn't have symmetrised	I couldn't have been symmetrising
you couldn't have been symmetrising
he couldn't have been symmetrising
we couldn't have been symmetrising
you couldn't have been symmetrising
they couldn't have been symmetrising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I symmetrise?
could you symmetrise?
could he symmetrise?
could we symmetrise?
could you symmetrise?
could they symmetrise? 	could I be symmetrising?
could you be symmetrising?
could he be symmetrising?
could we be symmetrising?
could you be symmetrising?
could they be symmetrising? 	could I have symmetrised?
could you have symmetrised?
could he have symmetrised?
could we have symmetrised?
could you have symmetrised?
could they have symmetrised? 	could I have been symmetrising?
could you have been symmetrising?
could he have been symmetrising?
could we have been symmetrising?
could you have been symmetrising?
could they have been symmetrising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I symmetrise?
couldn't you symmetrise?
couldn't he symmetrise?
couldn't we symmetrise?
couldn't you symmetrise?
couldn't they symmetrise? 	couldn't I be symmetrising?
couldn't you be symmetrising?
couldn't he be symmetrising?
couldn't we be symmetrising?
couldn't you be symmetrising?
couldn't they be symmetrising? 	couldn't I have symmetrised?
couldn't you have symmetrised?
couldn't he have symmetrised?
couldn't we have symmetrised?
couldn't you have symmetrised?
couldn't they have symmetrised? 	couldn't I have been symmetrising?
couldn't you have been symmetrising?
couldn't he have been symmetrising?
couldn't we have been symmetrising?
couldn't you have been symmetrising?
couldn't they have been symmetrising?