English verb conjugation
MUST FRIG

Regular verb: frig - frigged - frigged

Affirmation

Simple form	V-ing form
I must frig you must frig he must frig we must frig you must frig they must frig	I must be frigging you must be frigging he must be frigging we must be frigging you must be frigging they must be frigging
Perfect	V-ing perfect
I must have frigged you must have frigged he must have frigged we must have frigged you must have frigged they must have frigged	I must have been frigging you must have been frigging he must have been frigging we must have been frigging you must have been frigging they must have been frigging

Negation

Simple form	V-ing form
I must not frig you must not frig he must not frig we must not frig you must not frig they must not frig	I must not be frigging you must not be frigging he must not be frigging we must not be frigging you must not be frigging they must not be frigging
Perfect	V-ing perfect
I must not have frigged you must not have frigged he must not have frigged we must not have frigged you must not have frigged they must not have frigged	I must not have been frigging you must not have been frigging he must not have been frigging we must not have been frigging you must not have been frigging they must not have been frigging

Interrogative form

Simple form	V-ing form
must I frig? must you frig? must he frig? must we frig? must you frig? must they frig?	must I be frigging? must you be frigging? must he be frigging? must we be frigging? must you be frigging? must they be frigging?
Perfect	V-ing perfect
must I have frigged? must you have frigged? must he have frigged? must we have frigged? must you have frigged? must they have frigged?	must I have been frigging? must you have been frigging? must he have been frigging? must we have been frigging? must you have been frigging? must they have been frigging?

Interro-negative form

Simple form	V-ing form
must I not frig? must you not frig? must he not frig? must we not frig? must you not frig? must they not frig?	must I not be frigging? must you not be frigging? must he not be frigging? must we not be frigging? must you not be frigging? must they not be frigging?
Perfect	V-ing perfect
must I not have frigged? must you not have frigged? must he not have frigged? must we not have frigged? must you not have frigged? must they not have frigged?	must I not have been frigging? must you not have been frigging? must he not have been frigging? must we not have been frigging? must you not have been frigging? must they not have been frigging?