Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must fair fair you must fair fair she must fair fair we must fair fair you must fair fair they must fair fair
V-ing form
I must be fair fairing you must be fair fairing she must be fair fairing we must be fair fairing you must be fair fairing they must be fair fairing
Perfect
I must have fair faired you must have fair faired she must have fair faired we must have fair faired you must have fair faired they must have fair faired
V-ing perfect
I must have been fair fairing you must have been fair fairing she must have been fair fairing we must have been fair fairing you must have been fair fairing they must have been fair fairing
Negation
Simple form
I mustn't fair fair you mustn't fair fair she mustn't fair fair we mustn't fair fair you mustn't fair fair they mustn't fair fair
V-ing form
I mustn't be fair fairing you mustn't be fair fairing she mustn't be fair fairing we mustn't be fair fairing you mustn't be fair fairing they mustn't be fair fairing
Perfect
I mustn't have fair faired you mustn't have fair faired she mustn't have fair faired we mustn't have fair faired you mustn't have fair faired they mustn't have fair faired
V-ing perfect
I mustn't have been fair fairing you mustn't have been fair fairing she mustn't have been fair fairing we mustn't have been fair fairing you mustn't have been fair fairing they mustn't have been fair fairing
Interrogative form
Simple form
must I fair fair? must you fair fair? must she fair fair? must we fair fair? must you fair fair? must they fair fair?
V-ing form
must I be fair fairing? must you be fair fairing? must she be fair fairing? must we be fair fairing? must you be fair fairing? must they be fair fairing?
Perfect
must I have fair faired? must you have fair faired? must she have fair faired? must we have fair faired? must you have fair faired? must they have fair faired?
V-ing perfect
must I have been fair fairing? must you have been fair fairing? must she have been fair fairing? must we have been fair fairing? must you have been fair fairing? must they have been fair fairing?
Interro-negative form
Simple form
mustn't I fair fair? mustn't you fair fair? mustn't she fair fair? mustn't we fair fair? mustn't you fair fair? mustn't they fair fair?
V-ing form
mustn't I be fair fairing? mustn't you be fair fairing? mustn't she be fair fairing? mustn't we be fair fairing? mustn't you be fair fairing? mustn't they be fair fairing?
Perfect
mustn't I have fair faired? mustn't you have fair faired? mustn't she have fair faired? mustn't we have fair faired? mustn't you have fair faired? mustn't they have fair faired?
V-ing perfect
mustn't I have been fair fairing? mustn't you have been fair fairing? mustn't she have been fair fairing? mustn't we have been fair fairing? mustn't you have been fair fairing? mustn't they have been fair fairing?