English verb conjugation
MUST ADD

Regular verb: add - added - added

Affirmation

Simple form	V-ing form
I must add you must add she must add we must add you must add they must add	I must be adding you must be adding she must be adding we must be adding you must be adding they must be adding
Perfect	V-ing perfect
I must have added you must have added she must have added we must have added you must have added they must have added	I must have been adding you must have been adding she must have been adding we must have been adding you must have been adding they must have been adding

Negation

Simple form	V-ing form
I must not add you must not add she must not add we must not add you must not add they must not add	I must not be adding you must not be adding she must not be adding we must not be adding you must not be adding they must not be adding
Perfect	V-ing perfect
I must not have added you must not have added she must not have added we must not have added you must not have added they must not have added	I must not have been adding you must not have been adding she must not have been adding we must not have been adding you must not have been adding they must not have been adding

Interrogative form

Simple form	V-ing form
must I add? must you add? must she add? must we add? must you add? must they add?	must I be adding? must you be adding? must she be adding? must we be adding? must you be adding? must they be adding?
Perfect	V-ing perfect
must I have added? must you have added? must she have added? must we have added? must you have added? must they have added?	must I have been adding? must you have been adding? must she have been adding? must we have been adding? must you have been adding? must they have been adding?

Interro-negative form

Simple form	V-ing form
must I not add? must you not add? must she not add? must we not add? must you not add? must they not add?	must I not be adding? must you not be adding? must she not be adding? must we not be adding? must you not be adding? must they not be adding?
Perfect	V-ing perfect
must I not have added? must you not have added? must she not have added? must we not have added? must you not have added? must they not have added?	must I not have been adding? must you not have been adding? must she not have been adding? must we not have been adding? must you not have been adding? must they not have been adding?