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
she could concertina
we could concertina
you could concertina
they could concertina 	I could be concertinaing
you could be concertinaing
she could be concertinaing
we could be concertinaing
you could be concertinaing
they could be concertinaing	I could have concertinaed
you could have concertinaed
she 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
she 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 could not concertina
you could not concertina
she could not concertina
we could not concertina
you could not concertina
they could not concertina 	I could not be concertinaing
you could not be concertinaing
she could not be concertinaing
we could not be concertinaing
you could not be concertinaing
they could not be concertinaing	I could not have concertinaed
you could not have concertinaed
she could not have concertinaed
we could not have concertinaed
you could not have concertinaed
they could not have concertinaed	I could not have been concertinaing
you could not have been concertinaing
she could not have been concertinaing
we could not have been concertinaing
you could not have been concertinaing
they could not have been concertinaing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I concertina?
could you concertina?
could she concertina?
could we concertina?
could you concertina?
could they concertina? 	could I be concertinaing?
could you be concertinaing?
could she be concertinaing?
could we be concertinaing?
could you be concertinaing?
could they be concertinaing? 	could I have concertinaed?
could you have concertinaed?
could she 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 she 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 	
could I not concertina?
could you not concertina?
could she not concertina?
could we not concertina?
could you not concertina?
could they not concertina? 	could I not be concertinaing?
could you not be concertinaing?
could she not be concertinaing?
could we not be concertinaing?
could you not be concertinaing?
could they not be concertinaing? 	could I not have concertinaed?
could you not have concertinaed?
could she not have concertinaed?
could we not have concertinaed?
could you not have concertinaed?
could they not have concertinaed? 	could I not have been concertinaing?
could you not have been concertinaing?
could she not have been concertinaing?
could we not have been concertinaing?
could you not have been concertinaing?
could they not have been concertinaing?