ought to concertina
Regular verb: concertina - concertinaed- concertinaed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to concertina
you ought to concertina
she ought to concertina
we ought to concertina
you ought to concertina
they ought to concertina 	I ought to be concertinaing
you ought to be concertinaing
she ought to be concertinaing
we ought to be concertinaing
you ought to be concertinaing
they ought to be concertinaing	I ought to have concertinaed
you ought to have concertinaed
she ought to have concertinaed
we ought to have concertinaed
you ought to have concertinaed
they ought to have concertinaed	I ought to have been concertinaing
you ought to have been concertinaing
she ought to have been concertinaing
we ought to have been concertinaing
you ought to have been concertinaing
they ought to have been concertinaing	

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

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I concertina?
ought to you concertina?
ought to she concertina?
ought to we concertina?
ought to you concertina?
ought to they concertina? 	ought to I be concertinaing?
ought to you be concertinaing?
ought to she be concertinaing?
ought to we be concertinaing?
ought to you be concertinaing?
ought to they be concertinaing? 	ought to I have concertinaed?
ought to you have concertinaed?
ought to she have concertinaed?
ought to we have concertinaed?
ought to you have concertinaed?
ought to they have concertinaed? 	ought to I have been concertinaing?
ought to you have been concertinaing?
ought to she have been concertinaing?
ought to we have been concertinaing?
ought to you have been concertinaing?
ought to they have been concertinaing? 	

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