English verb conjugation
MAY UNDERSIGN

Regular verb: undersign - undersigned - undersigned

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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