could concertina
Verbe régulier : concertina - concertinaed- concertinaed
Traduction française : télescoper 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could concertina
you could concertina
he could concertina
we could concertina
you could concertina
they could concertina 	I could be concertinaing
you could be concertinaing
he could be concertinaing
we could be concertinaing
you could be concertinaing
they could be concertinaing	I could have concertinaed
you could have concertinaed
he could have concertinaed
we could have concertinaed
you could have concertinaed
they could have concertinaed	I could have been concertinaing
you could have been concertinaing
he could have been concertinaing
we could have been concertinaing
you could have been concertinaing
they could have been concertinaing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't concertina
you couldn't concertina
he couldn't concertina
we couldn't concertina
you couldn't concertina
they couldn't concertina 	I couldn't be concertinaing
you couldn't be concertinaing
he couldn't be concertinaing
we couldn't be concertinaing
you couldn't be concertinaing
they couldn't be concertinaing	I couldn't have concertinaed
you couldn't have concertinaed
he couldn't have concertinaed
we couldn't have concertinaed
you couldn't have concertinaed
they couldn't have concertinaed	I couldn't have been concertinaing
you couldn't have been concertinaing
he couldn't have been concertinaing
we couldn't have been concertinaing
you couldn't have been concertinaing
they couldn't have been concertinaing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I concertina?
could you concertina?
could he concertina?
could we concertina?
could you concertina?
could they concertina? 	could I be concertinaing?
could you be concertinaing?
could he be concertinaing?
could we be concertinaing?
could you be concertinaing?
could they be concertinaing? 	could I have concertinaed?
could you have concertinaed?
could he have concertinaed?
could we have concertinaed?
could you have concertinaed?
could they have concertinaed? 	could I have been concertinaing?
could you have been concertinaing?
could he have been concertinaing?
could we have been concertinaing?
could you have been concertinaing?
could they have been concertinaing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I concertina?
couldn't you concertina?
couldn't he concertina?
couldn't we concertina?
couldn't you concertina?
couldn't they concertina? 	couldn't I be concertinaing?
couldn't you be concertinaing?
couldn't he be concertinaing?
couldn't we be concertinaing?
couldn't you be concertinaing?
couldn't they be concertinaing? 	couldn't I have concertinaed?
couldn't you have concertinaed?
couldn't he have concertinaed?
couldn't we have concertinaed?
couldn't you have concertinaed?
couldn't they have concertinaed? 	couldn't I have been concertinaing?
couldn't you have been concertinaing?
couldn't he have been concertinaing?
couldn't we have been concertinaing?
couldn't you have been concertinaing?
couldn't they have been concertinaing?