must inhale
Regular verb: inhale - inhaled- inhaled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must inhale
you must inhale
he must inhale
we must inhale
you must inhale
they must inhale 	I must be inhaling
you must be inhaling
he must be inhaling
we must be inhaling
you must be inhaling
they must be inhaling	I must have inhaled
you must have inhaled
he must have inhaled
we must have inhaled
you must have inhaled
they must have inhaled	I must have been inhaling
you must have been inhaling
he must have been inhaling
we must have been inhaling
you must have been inhaling
they must have been inhaling	

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

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