could interchange
Verbe régulier : interchange - interchanged- interchanged
Traduction française : échanger - intervertir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could interchange
you could interchange
she could interchange
we could interchange
you could interchange
they could interchange 	I could be interchanging
you could be interchanging
she could be interchanging
we could be interchanging
you could be interchanging
they could be interchanging	I could have interchanged
you could have interchanged
she could have interchanged
we could have interchanged
you could have interchanged
they could have interchanged	I could have been interchanging
you could have been interchanging
she could have been interchanging
we could have been interchanging
you could have been interchanging
they could have been interchanging	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't interchange
you couldn't interchange
she couldn't interchange
we couldn't interchange
you couldn't interchange
they couldn't interchange 	I couldn't be interchanging
you couldn't be interchanging
she couldn't be interchanging
we couldn't be interchanging
you couldn't be interchanging
they couldn't be interchanging	I couldn't have interchanged
you couldn't have interchanged
she couldn't have interchanged
we couldn't have interchanged
you couldn't have interchanged
they couldn't have interchanged	I couldn't have been interchanging
you couldn't have been interchanging
she couldn't have been interchanging
we couldn't have been interchanging
you couldn't have been interchanging
they couldn't have been interchanging	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I interchange?
could you interchange?
could she interchange?
could we interchange?
could you interchange?
could they interchange? 	could I be interchanging?
could you be interchanging?
could she be interchanging?
could we be interchanging?
could you be interchanging?
could they be interchanging? 	could I have interchanged?
could you have interchanged?
could she have interchanged?
could we have interchanged?
could you have interchanged?
could they have interchanged? 	could I have been interchanging?
could you have been interchanging?
could she have been interchanging?
could we have been interchanging?
could you have been interchanging?
could they have been interchanging? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I interchange?
couldn't you interchange?
couldn't she interchange?
couldn't we interchange?
couldn't you interchange?
couldn't they interchange? 	couldn't I be interchanging?
couldn't you be interchanging?
couldn't she be interchanging?
couldn't we be interchanging?
couldn't you be interchanging?
couldn't they be interchanging? 	couldn't I have interchanged?
couldn't you have interchanged?
couldn't she have interchanged?
couldn't we have interchanged?
couldn't you have interchanged?
couldn't they have interchanged? 	couldn't I have been interchanging?
couldn't you have been interchanging?
couldn't she have been interchanging?
couldn't we have been interchanging?
couldn't you have been interchanging?
couldn't they have been interchanging?