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