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 must not nag you must not nag he must not nag we must not nag you must not nag they must not nag	I must not be nagging you must not be nagging he must not be nagging we must not be nagging you must not be nagging they must not be nagging
Perfect	V-ing perfect
I must not have nagged you must not have nagged he must not have nagged we must not have nagged you must not have nagged they must not have nagged	I must not have been nagging you must not have been nagging he must not have been nagging we must not have been nagging you must not have been nagging they must not 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
must I not nag? must you not nag? must he not nag? must we not nag? must you not nag? must they not nag?	must I not be nagging? must you not be nagging? must he not be nagging? must we not be nagging? must you not be nagging? must they not be nagging?
Perfect	V-ing perfect
must I not have nagged? must you not have nagged? must he not have nagged? must we not have nagged? must you not have nagged? must they not have nagged?	must I not have been nagging? must you not have been nagging? must he not have been nagging? must we not have been nagging? must you not have been nagging? must they not have been nagging?