to concertina
Regular verb: concertina - concertinaed- concertinaed

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I concertina
you concertina
he concertinas
we concertina
you concertina
they concertina 	Iamconcertinaing
youareconcertinaing
heisconcertinaing
weareconcertinaing
youareconcertinaing
theyareconcertinaing	I concertinaed
you concertinaed
he concertinaed
we concertinaed
you concertinaed
they concertinaed	Iwasconcertinaing
youwereconcertinaing
hewasconcertinaing
wewereconcertinaing
youwereconcertinaing
theywereconcertinaing	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I have concertinaed
you have concertinaed
he has concertinaed
we have concertinaed
you have concertinaed
they have concertinaed	I have been concertinaing
you have been concertinaing
hehasbeen concertinaing
we have been concertinaing
you have been concertinaing
they have been concertinaing	I had concertinaed
you had concertinaed
he had concertinaed
we had concertinaed
you had concertinaed
they had concertinaed	I had been concertinaing
you had been concertinaing
he had been concertinaing
we had been concertinaing
you had been concertinaing
they had been concertinaing	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I will concertina
you will concertina
he will concertina
we will concertina
you will concertina
they will concertina 	I will be concertinaing
you will be concertinaing
he will be concertinaing
we will be concertinaing
you will be concertinaing
they will be concertinaing	I will have concertinaed
you will have concertinaed
he will have concertinaed
we will have concertinaed
you will have concertinaed
they will have concertinaed	I will have been concertinaing
you will have been concertinaing
he will have been concertinaing
we will have been concertinaing
you will have been concertinaing
they will have been concertinaing	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I would concertina
you would concertina
he would concertina
we would concertina
you would concertina
they would concertina 	I would be concertinaing
you would be concertinaing
he would be concertinaing
we would be concertinaing
you would be concertinaing
they would be concertinaing	I would have concertinaed
you would have concertinaed
he would have concertinaed
we would have concertinaed
you would have concertinaed
they would have concertinaed	I would have been concertinaing
you would have been concertinaing
he would have been concertinaing
we would have been concertinaing
you would have been concertinaing
they would have been concertinaing	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to concertina 	 	concertina
Let's concertina
concertina 	 	

Participle 	
Present 	Past 	 	 	
concertinaing	concertinaed