I must unhair you must unhair she must unhair we must unhair you must unhair they must unhair
V-ing form
I must be unhairing you must be unhairing she must be unhairing we must be unhairing you must be unhairing they must be unhairing
Perfect
I must have unhaired you must have unhaired she must have unhaired we must have unhaired you must have unhaired they must have unhaired
V-ing perfect
I must have been unhairing you must have been unhairing she must have been unhairing we must have been unhairing you must have been unhairing they must have been unhairing
Negation
Simple form
I mustn't unhair you mustn't unhair she mustn't unhair we mustn't unhair you mustn't unhair they mustn't unhair
V-ing form
I mustn't be unhairing you mustn't be unhairing she mustn't be unhairing we mustn't be unhairing you mustn't be unhairing they mustn't be unhairing
Perfect
I mustn't have unhaired you mustn't have unhaired she mustn't have unhaired we mustn't have unhaired you mustn't have unhaired they mustn't have unhaired
V-ing perfect
I mustn't have been unhairing you mustn't have been unhairing she mustn't have been unhairing we mustn't have been unhairing you mustn't have been unhairing they mustn't have been unhairing
Interrogative form
Simple form
must I unhair? must you unhair? must she unhair? must we unhair? must you unhair? must they unhair?
V-ing form
must I be unhairing? must you be unhairing? must she be unhairing? must we be unhairing? must you be unhairing? must they be unhairing?
Perfect
must I have unhaired? must you have unhaired? must she have unhaired? must we have unhaired? must you have unhaired? must they have unhaired?
V-ing perfect
must I have been unhairing? must you have been unhairing? must she have been unhairing? must we have been unhairing? must you have been unhairing? must they have been unhairing?
Interro-negative form
Simple form
mustn't I unhair? mustn't you unhair? mustn't she unhair? mustn't we unhair? mustn't you unhair? mustn't they unhair?
V-ing form
mustn't I be unhairing? mustn't you be unhairing? mustn't she be unhairing? mustn't we be unhairing? mustn't you be unhairing? mustn't they be unhairing?
Perfect
mustn't I have unhaired? mustn't you have unhaired? mustn't she have unhaired? mustn't we have unhaired? mustn't you have unhaired? mustn't they have unhaired?
V-ing perfect
mustn't I have been unhairing? mustn't you have been unhairing? mustn't she have been unhairing? mustn't we have been unhairing? mustn't you have been unhairing? mustn't they have been unhairing?