I might concertina you might concertina he might concertina we might concertina you might concertina they might concertina
V-ing form
I might be concertinaing you might be concertinaing he might be concertinaing we might be concertinaing you might be concertinaing they might be concertinaing
Perfect
I might have concertinaed you might have concertinaed he might have concertinaed we might have concertinaed you might have concertinaed they might have concertinaed
V-ing perfect
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
I mightn't concertina you mightn't concertina he mightn't concertina we mightn't concertina you mightn't concertina they mightn't concertina
V-ing form
I mightn't be concertinaing you mightn't be concertinaing he mightn't be concertinaing we mightn't be concertinaing you mightn't be concertinaing they mightn't be concertinaing
Perfect
I mightn't have concertinaed you mightn't have concertinaed he mightn't have concertinaed we mightn't have concertinaed you mightn't have concertinaed they mightn't have concertinaed
V-ing perfect
I mightn't have been concertinaing you mightn't have been concertinaing he mightn't have been concertinaing we mightn't have been concertinaing you mightn't have been concertinaing they mightn't have been concertinaing
Interrogative form
Simple form
might I concertina? might you concertina? might he concertina? might we concertina? might you concertina? might they concertina?
V-ing form
might I be concertinaing? might you be concertinaing? might he be concertinaing? might we be concertinaing? might you be concertinaing? might they be concertinaing?
Perfect
might I have concertinaed? might you have concertinaed? might he have concertinaed? might we have concertinaed? might you have concertinaed? might they have concertinaed?
V-ing perfect
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
mightn't I concertina? mightn't you concertina? mightn't he concertina? mightn't we concertina? mightn't you concertina? mightn't they concertina?
V-ing form
mightn't I be concertinaing? mightn't you be concertinaing? mightn't he be concertinaing? mightn't we be concertinaing? mightn't you be concertinaing? mightn't they be concertinaing?
Perfect
mightn't I have concertinaed? mightn't you have concertinaed? mightn't he have concertinaed? mightn't we have concertinaed? mightn't you have concertinaed? mightn't they have concertinaed?
V-ing perfect
mightn't I have been concertinaing? mightn't you have been concertinaing? mightn't he have been concertinaing? mightn't we have been concertinaing? mightn't you have been concertinaing? mightn't they have been concertinaing?