shall concertina
Regular verb: concertina - concertinaed- concertinaed

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

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

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

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