shall untack
Regular verb: untack - untacked- untacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll untack
you'll untack
she'll untack
we'll untack
you'll untack
they'll untack 	I'll be untacking
you'll be untacking
she'll be untacking
we'll be untacking
you'll be untacking
they'll be untacking	I'll have untacked
you'll have untacked
she'll have untacked
we'll have untacked
you'll have untacked
they'll have untacked	I'll have been untacking
you'll have been untacking
she'll have been untacking
we'll have been untacking
you'll have been untacking
they'll have been untacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't untack
you shan't untack
she shan't untack
we shan't untack
you shan't untack
they shan't untack 	I shan't be untacking
you shan't be untacking
she shan't be untacking
we shan't be untacking
you shan't be untacking
they shan't be untacking	I shan't have untacked
you shan't have untacked
she shan't have untacked
we shan't have untacked
you shan't have untacked
they shan't have untacked	I shan't have been untacking
you shan't have been untacking
she shan't have been untacking
we shan't have been untacking
you shan't have been untacking
they shan't have been untacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I untack?
shall you untack?
shall she untack?
shall we untack?
shall you untack?
shall they untack? 	shall I be untacking?
shall you be untacking?
shall she be untacking?
shall we be untacking?
shall you be untacking?
shall they be untacking? 	shall I have untacked?
shall you have untacked?
shall she have untacked?
shall we have untacked?
shall you have untacked?
shall they have untacked? 	shall I have been untacking?
shall you have been untacking?
shall she have been untacking?
shall we have been untacking?
shall you have been untacking?
shall they have been untacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I untack?
shan't you untack?
shan't she untack?
shan't we untack?
shan't you untack?
shan't they untack? 	shan't I be untacking?
shan't you be untacking?
shan't she be untacking?
shan't we be untacking?
shan't you be untacking?
shan't they be untacking? 	shan't I have untacked?
shan't you have untacked?
shan't she have untacked?
shan't we have untacked?
shan't you have untacked?
shan't they have untacked? 	shan't I have been untacking?
shan't you have been untacking?
shan't she have been untacking?
shan't we have been untacking?
shan't you have been untacking?
shan't they have been untacking?