I must refuge you must refuge he must refuge we must refuge you must refuge they must refuge
V-ing form
I must be refuging you must be refuging he must be refuging we must be refuging you must be refuging they must be refuging
Perfect
I must have refuged you must have refuged he must have refuged we must have refuged you must have refuged they must have refuged
V-ing perfect
I must have been refuging you must have been refuging he must have been refuging we must have been refuging you must have been refuging they must have been refuging
Negation
Simple form
I mustn't refuge you mustn't refuge he mustn't refuge we mustn't refuge you mustn't refuge they mustn't refuge
V-ing form
I mustn't be refuging you mustn't be refuging he mustn't be refuging we mustn't be refuging you mustn't be refuging they mustn't be refuging
Perfect
I mustn't have refuged you mustn't have refuged he mustn't have refuged we mustn't have refuged you mustn't have refuged they mustn't have refuged
V-ing perfect
I mustn't have been refuging you mustn't have been refuging he mustn't have been refuging we mustn't have been refuging you mustn't have been refuging they mustn't have been refuging
Interrogative form
Simple form
must I refuge? must you refuge? must he refuge? must we refuge? must you refuge? must they refuge?
V-ing form
must I be refuging? must you be refuging? must he be refuging? must we be refuging? must you be refuging? must they be refuging?
Perfect
must I have refuged? must you have refuged? must he have refuged? must we have refuged? must you have refuged? must they have refuged?
V-ing perfect
must I have been refuging? must you have been refuging? must he have been refuging? must we have been refuging? must you have been refuging? must they have been refuging?
Interro-negative form
Simple form
mustn't I refuge? mustn't you refuge? mustn't he refuge? mustn't we refuge? mustn't you refuge? mustn't they refuge?
V-ing form
mustn't I be refuging? mustn't you be refuging? mustn't he be refuging? mustn't we be refuging? mustn't you be refuging? mustn't they be refuging?
Perfect
mustn't I have refuged? mustn't you have refuged? mustn't he have refuged? mustn't we have refuged? mustn't you have refuged? mustn't they have refuged?
V-ing perfect
mustn't I have been refuging? mustn't you have been refuging? mustn't he have been refuging? mustn't we have been refuging? mustn't you have been refuging? mustn't they have been refuging?