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