English verb conjugation
MUST NAG

Regular verb: nag - nagged - nagged

Affirmation

Simple form	V-ing form
I must nag you must nag he must nag we must nag you must nag they must nag	I must be nagging you must be nagging he must be nagging we must be nagging you must be nagging they must be nagging
Perfect	V-ing perfect
I must have nagged you must have nagged he must have nagged we must have nagged you must have nagged they must have nagged	I must have been nagging you must have been nagging he must have been nagging we must have been nagging you must have been nagging they must have been nagging

Negation

Simple form	V-ing form
I mustn't nag you mustn't nag he mustn't nag we mustn't nag you mustn't nag they mustn't nag	I mustn't be nagging you mustn't be nagging he mustn't be nagging we mustn't be nagging you mustn't be nagging they mustn't be nagging
Perfect	V-ing perfect
I mustn't have nagged you mustn't have nagged he mustn't have nagged we mustn't have nagged you mustn't have nagged they mustn't have nagged	I mustn't have been nagging you mustn't have been nagging he mustn't have been nagging we mustn't have been nagging you mustn't have been nagging they mustn't have been nagging

Interrogative form

Simple form	V-ing form
must I nag? must you nag? must he nag? must we nag? must you nag? must they nag?	must I be nagging? must you be nagging? must he be nagging? must we be nagging? must you be nagging? must they be nagging?
Perfect	V-ing perfect
must I have nagged? must you have nagged? must he have nagged? must we have nagged? must you have nagged? must they have nagged?	must I have been nagging? must you have been nagging? must he have been nagging? must we have been nagging? must you have been nagging? must they have been nagging?

Interro-negative form

Simple form	V-ing form
mustn't I nag? mustn't you nag? mustn't he nag? mustn't we nag? mustn't you nag? mustn't they nag?	mustn't I be nagging? mustn't you be nagging? mustn't he be nagging? mustn't we be nagging? mustn't you be nagging? mustn't they be nagging?
Perfect	V-ing perfect
mustn't I have nagged? mustn't you have nagged? mustn't he have nagged? mustn't we have nagged? mustn't you have nagged? mustn't they have nagged?	mustn't I have been nagging? mustn't you have been nagging? mustn't he have been nagging? mustn't we have been nagging? mustn't you have been nagging? mustn't they have been nagging?