I must archive you must archive he must archive we must archive you must archive they must archive
V-ing form
I must be archiving you must be archiving he must be archiving we must be archiving you must be archiving they must be archiving
Perfect
I must have archived you must have archived he 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 he 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 he 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 he 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 he 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 he 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 he archive? must we archive? must you archive? must they archive?
V-ing form
must I be archiving? must you be archiving? must he be archiving? must we be archiving? must you be archiving? must they be archiving?
Perfect
must I have archived? must you have archived? must he 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 he 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 he 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 he 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 he 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 he have been archiving? mustn't we have been archiving? mustn't you have been archiving? mustn't they have been archiving?