Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must fit fit you must fit fit she must fit fit we must fit fit you must fit fit they must fit fit
V-ing form
I must be fit fiting you must be fit fiting she must be fit fiting we must be fit fiting you must be fit fiting they must be fit fiting
Perfect
I must have fit fited you must have fit fited she must have fit fited we must have fit fited you must have fit fited they must have fit fited
V-ing perfect
I must have been fit fiting you must have been fit fiting she must have been fit fiting we must have been fit fiting you must have been fit fiting they must have been fit fiting
Negation
Simple form
I must not fit fit you must not fit fit she must not fit fit we must not fit fit you must not fit fit they must not fit fit
V-ing form
I must not be fit fiting you must not be fit fiting she must not be fit fiting we must not be fit fiting you must not be fit fiting they must not be fit fiting
Perfect
I must not have fit fited you must not have fit fited she must not have fit fited we must not have fit fited you must not have fit fited they must not have fit fited
V-ing perfect
I must not have been fit fiting you must not have been fit fiting she must not have been fit fiting we must not have been fit fiting you must not have been fit fiting they must not have been fit fiting
Interrogative form
Simple form
must I fit fit? must you fit fit? must she fit fit? must we fit fit? must you fit fit? must they fit fit?
V-ing form
must I be fit fiting? must you be fit fiting? must she be fit fiting? must we be fit fiting? must you be fit fiting? must they be fit fiting?
Perfect
must I have fit fited? must you have fit fited? must she have fit fited? must we have fit fited? must you have fit fited? must they have fit fited?
V-ing perfect
must I have been fit fiting? must you have been fit fiting? must she have been fit fiting? must we have been fit fiting? must you have been fit fiting? must they have been fit fiting?
Interro-negative form
Simple form
must I not fit fit? must you not fit fit? must she not fit fit? must we not fit fit? must you not fit fit? must they not fit fit?
V-ing form
must I not be fit fiting? must you not be fit fiting? must she not be fit fiting? must we not be fit fiting? must you not be fit fiting? must they not be fit fiting?
Perfect
must I not have fit fited? must you not have fit fited? must she not have fit fited? must we not have fit fited? must you not have fit fited? must they not have fit fited?
V-ing perfect
must I not have been fit fiting? must you not have been fit fiting? must she not have been fit fiting? must we not have been fit fiting? must you not have been fit fiting? must they not have been fit fiting?