I'll be lacking you'll be lacking she'll be lacking we'll be lacking you'll be lacking they'll be lacking
Perfect
I'll have lacked you'll have lacked she'll have lacked we'll have lacked you'll have lacked they'll have lacked
V-ing perfect
I'll have been lacking you'll have been lacking she'll have been lacking we'll have been lacking you'll have been lacking they'll have been lacking
Negation
Simple form
I shan't lack you shan't lack she shan't lack we shan't lack you shan't lack they shan't lack
V-ing form
I shan't be lacking you shan't be lacking she shan't be lacking we shan't be lacking you shan't be lacking they shan't be lacking
Perfect
I shan't have lacked you shan't have lacked she shan't have lacked we shan't have lacked you shan't have lacked they shan't have lacked
V-ing perfect
I shan't have been lacking you shan't have been lacking she shan't have been lacking we shan't have been lacking you shan't have been lacking they shan't have been lacking
Interrogative form
Simple form
shall I lack? shall you lack? shall she lack? shall we lack? shall you lack? shall they lack?
V-ing form
shall I be lacking? shall you be lacking? shall she be lacking? shall we be lacking? shall you be lacking? shall they be lacking?
Perfect
shall I have lacked? shall you have lacked? shall she have lacked? shall we have lacked? shall you have lacked? shall they have lacked?
V-ing perfect
shall I have been lacking? shall you have been lacking? shall she have been lacking? shall we have been lacking? shall you have been lacking? shall they have been lacking?
Interro-negative form
Simple form
shan't I lack? shan't you lack? shan't she lack? shan't we lack? shan't you lack? shan't they lack?
V-ing form
shan't I be lacking? shan't you be lacking? shan't she be lacking? shan't we be lacking? shan't you be lacking? shan't they be lacking?
Perfect
shan't I have lacked? shan't you have lacked? shan't she have lacked? shan't we have lacked? shan't you have lacked? shan't they have lacked?
V-ing perfect
shan't I have been lacking? shan't you have been lacking? shan't she have been lacking? shan't we have been lacking? shan't you have been lacking? shan't they have been lacking?