shall unthread
Regular verb: unthread - unthreaded- unthreaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll unthread
you'll unthread
he'll unthread
we'll unthread
you'll unthread
they'll unthread 	I'll be unthreading
you'll be unthreading
he'll be unthreading
we'll be unthreading
you'll be unthreading
they'll be unthreading	I'll have unthreaded
you'll have unthreaded
he'll have unthreaded
we'll have unthreaded
you'll have unthreaded
they'll have unthreaded	I'll have been unthreading
you'll have been unthreading
he'll have been unthreading
we'll have been unthreading
you'll have been unthreading
they'll have been unthreading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't unthread
you shan't unthread
he shan't unthread
we shan't unthread
you shan't unthread
they shan't unthread 	I shan't be unthreading
you shan't be unthreading
he shan't be unthreading
we shan't be unthreading
you shan't be unthreading
they shan't be unthreading	I shan't have unthreaded
you shan't have unthreaded
he shan't have unthreaded
we shan't have unthreaded
you shan't have unthreaded
they shan't have unthreaded	I shan't have been unthreading
you shan't have been unthreading
he shan't have been unthreading
we shan't have been unthreading
you shan't have been unthreading
they shan't have been unthreading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I unthread?
shall you unthread?
shall he unthread?
shall we unthread?
shall you unthread?
shall they unthread? 	shall I be unthreading?
shall you be unthreading?
shall he be unthreading?
shall we be unthreading?
shall you be unthreading?
shall they be unthreading? 	shall I have unthreaded?
shall you have unthreaded?
shall he have unthreaded?
shall we have unthreaded?
shall you have unthreaded?
shall they have unthreaded? 	shall I have been unthreading?
shall you have been unthreading?
shall he have been unthreading?
shall we have been unthreading?
shall you have been unthreading?
shall they have been unthreading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I unthread?
shan't you unthread?
shan't he unthread?
shan't we unthread?
shan't you unthread?
shan't they unthread? 	shan't I be unthreading?
shan't you be unthreading?
shan't he be unthreading?
shan't we be unthreading?
shan't you be unthreading?
shan't they be unthreading? 	shan't I have unthreaded?
shan't you have unthreaded?
shan't he have unthreaded?
shan't we have unthreaded?
shan't you have unthreaded?
shan't they have unthreaded? 	shan't I have been unthreading?
shan't you have been unthreading?
shan't he have been unthreading?
shan't we have been unthreading?
shan't you have been unthreading?
shan't they have been unthreading?