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