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