English verb conjugation
MUST FRIG

Regular verb: frig - frigged - frigged

Affirmation

Simple form	V-ing form
I must frig you must frig she must frig we must frig you must frig they must frig	I must be frigging you must be frigging she 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 she 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 she 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 she 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 she 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 she 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 she 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 she frig? must we frig? must you frig? must they frig?	must I be frigging? must you be frigging? must she 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 she 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 she 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 she 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 she 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 she 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 she not have been frigging? must we not have been frigging? must you not have been frigging? must they not have been frigging?