shall concuss
Regular verb: concuss - concussed- concussed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll concuss
you'll concuss
he'll concuss
we'll concuss
you'll concuss
they'll concuss 	I'll be concussing
you'll be concussing
he'll be concussing
we'll be concussing
you'll be concussing
they'll be concussing	I'll have concussed
you'll have concussed
he'll have concussed
we'll have concussed
you'll have concussed
they'll have concussed	I'll have been concussing
you'll have been concussing
he'll have been concussing
we'll have been concussing
you'll have been concussing
they'll have been concussing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't concuss
you shan't concuss
he shan't concuss
we shan't concuss
you shan't concuss
they shan't concuss 	I shan't be concussing
you shan't be concussing
he shan't be concussing
we shan't be concussing
you shan't be concussing
they shan't be concussing	I shan't have concussed
you shan't have concussed
he shan't have concussed
we shan't have concussed
you shan't have concussed
they shan't have concussed	I shan't have been concussing
you shan't have been concussing
he shan't have been concussing
we shan't have been concussing
you shan't have been concussing
they shan't have been concussing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I concuss?
shall you concuss?
shall he concuss?
shall we concuss?
shall you concuss?
shall they concuss? 	shall I be concussing?
shall you be concussing?
shall he be concussing?
shall we be concussing?
shall you be concussing?
shall they be concussing? 	shall I have concussed?
shall you have concussed?
shall he have concussed?
shall we have concussed?
shall you have concussed?
shall they have concussed? 	shall I have been concussing?
shall you have been concussing?
shall he have been concussing?
shall we have been concussing?
shall you have been concussing?
shall they have been concussing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I concuss?
shan't you concuss?
shan't he concuss?
shan't we concuss?
shan't you concuss?
shan't they concuss? 	shan't I be concussing?
shan't you be concussing?
shan't he be concussing?
shan't we be concussing?
shan't you be concussing?
shan't they be concussing? 	shan't I have concussed?
shan't you have concussed?
shan't he have concussed?
shan't we have concussed?
shan't you have concussed?
shan't they have concussed? 	shan't I have been concussing?
shan't you have been concussing?
shan't he have been concussing?
shan't we have been concussing?
shan't you have been concussing?
shan't they have been concussing?