might concertina
Regular verb: concertina - concertinaed- concertinaed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I might concertina
you might concertina
he might concertina
we might concertina
you might concertina
they might concertina 	I might be concertinaing
you might be concertinaing
he might be concertinaing
we might be concertinaing
you might be concertinaing
they might be concertinaing	I might have concertinaed
you might have concertinaed
he might have concertinaed
we might have concertinaed
you might have concertinaed
they might have concertinaed	I might have been concertinaing
you might have been concertinaing
he might have been concertinaing
we might have been concertinaing
you might have been concertinaing
they might have been concertinaing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I might not concertina
you might not concertina
he might not concertina
we might not concertina
you might not concertina
they might not concertina 	I might not be concertinaing
you might not be concertinaing
he might not be concertinaing
we might not be concertinaing
you might not be concertinaing
they might not be concertinaing	I might not have concertinaed
you might not have concertinaed
he might not have concertinaed
we might not have concertinaed
you might not have concertinaed
they might not have concertinaed	I might not have been concertinaing
you might not have been concertinaing
he might not have been concertinaing
we might not have been concertinaing
you might not have been concertinaing
they might not have been concertinaing	

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

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