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