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