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