would concertina
Regular verb: concertina - concertinaed- concertinaed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd concertina
you'd concertina
he'd concertina
we'd concertina
you'd concertina
they'd concertina 	I'd be concertinaing
you'd be concertinaing
he'd be concertinaing
we'd be concertinaing
you'd be concertinaing
they'd be concertinaing	I would've concertinaed
you would've concertinaed
he would've concertinaed
we would've concertinaed
you would've concertinaed
they would've concertinaed	I would've been concertinaing
you would've been concertinaing
he would've been concertinaing
we would've been concertinaing
you would've been concertinaing
they would've been concertinaing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I wouldn't concertina
you wouldn't concertina
he wouldn't concertina
we wouldn't concertina
you wouldn't concertina
they wouldn't concertina 	I wouldn't be concertinaing
you wouldn't be concertinaing
he wouldn't be concertinaing
we wouldn't be concertinaing
you wouldn't be concertinaing
they wouldn't be concertinaing	I wouldn't have concertinaed
you wouldn't have concertinaed
he wouldn't have concertinaed
we wouldn't have concertinaed
you wouldn't have concertinaed
they wouldn't have concertinaed	I wouldn't have been concertinaing
you wouldn't have been concertinaing
he wouldn't have been concertinaing
we wouldn't have been concertinaing
you wouldn't have been concertinaing
they wouldn't have been concertinaing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
would I concertina?
would you concertina?
would he concertina?
would we concertina?
would you concertina?
would they concertina? 	would I be concertinaing?
would you be concertinaing?
would he be concertinaing?
would we be concertinaing?
would you be concertinaing?
would they be concertinaing? 	would I have concertinaed?
would you have concertinaed?
would he have concertinaed?
would we have concertinaed?
would you have concertinaed?
would they have concertinaed? 	would I have been concertinaing?
would you have been concertinaing?
would he have been concertinaing?
would we have been concertinaing?
would you have been concertinaing?
would they have been concertinaing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
wouldn't I concertina?
wouldn't you concertina?
wouldn't he concertina?
wouldn't we concertina?
wouldn't you concertina?
wouldn't they concertina? 	wouldn't I be concertinaing?
wouldn't you be concertinaing?
wouldn't he be concertinaing?
wouldn't we be concertinaing?
wouldn't you be concertinaing?
wouldn't they be concertinaing? 	wouldn't I have concertinaed?
wouldn't you have concertinaed?
wouldn't he have concertinaed?
wouldn't we have concertinaed?
wouldn't you have concertinaed?
wouldn't they have concertinaed? 	wouldn't I have been concertinaing?
wouldn't you have been concertinaing?
wouldn't he have been concertinaing?
wouldn't we have been concertinaing?
wouldn't you have been concertinaing?
wouldn't they have been concertinaing?