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