English verb conjugation
MUST ADD

Regular verb: add - added - added

Affirmation

Simple form	V-ing form
I must add you must add he must add we must add you must add they must add	I must be adding you must be adding he 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 he 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 he 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 mustn't add you mustn't add he mustn't add we mustn't add you mustn't add they mustn't add	I mustn't be adding you mustn't be adding he mustn't be adding we mustn't be adding you mustn't be adding they mustn't be adding
Perfect	V-ing perfect
I mustn't have added you mustn't have added he mustn't have added we mustn't have added you mustn't have added they mustn't have added	I mustn't have been adding you mustn't have been adding he mustn't have been adding we mustn't have been adding you mustn't have been adding they mustn't have been adding

Interrogative form

Simple form	V-ing form
must I add? must you add? must he add? must we add? must you add? must they add?	must I be adding? must you be adding? must he 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 he 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 he 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
mustn't I add? mustn't you add? mustn't he add? mustn't we add? mustn't you add? mustn't they add?	mustn't I be adding? mustn't you be adding? mustn't he be adding? mustn't we be adding? mustn't you be adding? mustn't they be adding?
Perfect	V-ing perfect
mustn't I have added? mustn't you have added? mustn't he have added? mustn't we have added? mustn't you have added? mustn't they have added?	mustn't I have been adding? mustn't you have been adding? mustn't he have been adding? mustn't we have been adding? mustn't you have been adding? mustn't they have been adding?