English verb conjugation
SHALL LACK

Regular verb: lack - lacked - lacked

Affirmation

Simple form	V-ing form
I shall lack you shall lack she shall lack we shall lack you shall lack they shall lack	I shall be lacking you shall be lacking she shall be lacking we shall be lacking you shall be lacking they shall be lacking
Perfect	V-ing perfect
I shall have lacked you shall have lacked she shall have lacked we shall have lacked you shall have lacked they shall have lacked	I shall have been lacking you shall have been lacking she shall have been lacking we shall have been lacking you shall have been lacking they shall have been lacking

Negation

Simple form	V-ing form
I shall not lack you shall not lack she shall not lack we shall not lack you shall not lack they shall not lack	I shall not be lacking you shall not be lacking she shall not be lacking we shall not be lacking you shall not be lacking they shall not be lacking
Perfect	V-ing perfect
I shall not have lacked you shall not have lacked she shall not have lacked we shall not have lacked you shall not have lacked they shall not have lacked	I shall not have been lacking you shall not have been lacking she shall not have been lacking we shall not have been lacking you shall not have been lacking they shall not have been lacking

Interrogative form

Simple form	V-ing form
shall I lack? shall you lack? shall she lack? shall we lack? shall you lack? shall they lack?	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	V-ing 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?	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	V-ing form
shall I not lack? shall you not lack? shall she not lack? shall we not lack? shall you not lack? shall they not lack?	shall I not be lacking? shall you not be lacking? shall she not be lacking? shall we not be lacking? shall you not be lacking? shall they not be lacking?
Perfect	V-ing perfect
shall I not have lacked? shall you not have lacked? shall she not have lacked? shall we not have lacked? shall you not have lacked? shall they not have lacked?	shall I not have been lacking? shall you not have been lacking? shall she not have been lacking? shall we not have been lacking? shall you not have been lacking? shall they not have been lacking?