English verb conjugation
SHALL UNDERSIGN

Regular verb: undersign - undersigned - undersigned

Affirmation

Simple form	V-ing form
I shall undersign you shall undersign she shall undersign we shall undersign you shall undersign they shall undersign	I shall be undersigning you shall be undersigning she shall be undersigning we shall be undersigning you shall be undersigning they shall be undersigning
Perfect	V-ing perfect
I shall have undersigned you shall have undersigned she shall have undersigned we shall have undersigned you shall have undersigned they shall have undersigned	I shall have been undersigning you shall have been undersigning she shall have been undersigning we shall have been undersigning you shall have been undersigning they shall have been undersigning

Negation

Simple form	V-ing form
I shall not undersign you shall not undersign she shall not undersign we shall not undersign you shall not undersign they shall not undersign	I shall not be undersigning you shall not be undersigning she shall not be undersigning we shall not be undersigning you shall not be undersigning they shall not be undersigning
Perfect	V-ing perfect
I shall not have undersigned you shall not have undersigned she shall not have undersigned we shall not have undersigned you shall not have undersigned they shall not have undersigned	I shall not have been undersigning you shall not have been undersigning she shall not have been undersigning we shall not have been undersigning you shall not have been undersigning they shall not have been undersigning

Interrogative form

Simple form	V-ing form
shall I undersign? shall you undersign? shall she undersign? shall we undersign? shall you undersign? shall they undersign?	shall I be undersigning? shall you be undersigning? shall she be undersigning? shall we be undersigning? shall you be undersigning? shall they be undersigning?
Perfect	V-ing perfect
shall I have undersigned? shall you have undersigned? shall she have undersigned? shall we have undersigned? shall you have undersigned? shall they have undersigned?	shall I have been undersigning? shall you have been undersigning? shall she have been undersigning? shall we have been undersigning? shall you have been undersigning? shall they have been undersigning?

Interro-negative form

Simple form	V-ing form
shall I not undersign? shall you not undersign? shall she not undersign? shall we not undersign? shall you not undersign? shall they not undersign?	shall I not be undersigning? shall you not be undersigning? shall she not be undersigning? shall we not be undersigning? shall you not be undersigning? shall they not be undersigning?
Perfect	V-ing perfect
shall I not have undersigned? shall you not have undersigned? shall she not have undersigned? shall we not have undersigned? shall you not have undersigned? shall they not have undersigned?	shall I not have been undersigning? shall you not have been undersigning? shall she not have been undersigning? shall we not have been undersigning? shall you not have been undersigning? shall they not have been undersigning?