must tire
Regular verb: tire - tired- tired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tire
you must tire
he must tire
we must tire
you must tire
they must tire 	I must be tiring
you must be tiring
he must be tiring
we must be tiring
you must be tiring
they must be tiring	I must have tired
you must have tired
he must have tired
we must have tired
you must have tired
they must have tired	I must have been tiring
you must have been tiring
he must have been tiring
we must have been tiring
you must have been tiring
they must have been tiring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't tire
you mustn't tire
he mustn't tire
we mustn't tire
you mustn't tire
they mustn't tire 	I mustn't be tiring
you mustn't be tiring
he mustn't be tiring
we mustn't be tiring
you mustn't be tiring
they mustn't be tiring	I mustn't have tired
you mustn't have tired
he mustn't have tired
we mustn't have tired
you mustn't have tired
they mustn't have tired	I mustn't have been tiring
you mustn't have been tiring
he mustn't have been tiring
we mustn't have been tiring
you mustn't have been tiring
they mustn't have been tiring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tire?
must you tire?
must he tire?
must we tire?
must you tire?
must they tire? 	must I be tiring?
must you be tiring?
must he be tiring?
must we be tiring?
must you be tiring?
must they be tiring? 	must I have tired?
must you have tired?
must he have tired?
must we have tired?
must you have tired?
must they have tired? 	must I have been tiring?
must you have been tiring?
must he have been tiring?
must we have been tiring?
must you have been tiring?
must they have been tiring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I tire?
mustn't you tire?
mustn't he tire?
mustn't we tire?
mustn't you tire?
mustn't they tire? 	mustn't I be tiring?
mustn't you be tiring?
mustn't he be tiring?
mustn't we be tiring?
mustn't you be tiring?
mustn't they be tiring? 	mustn't I have tired?
mustn't you have tired?
mustn't he have tired?
mustn't we have tired?
mustn't you have tired?
mustn't they have tired? 	mustn't I have been tiring?
mustn't you have been tiring?
mustn't he have been tiring?
mustn't we have been tiring?
mustn't you have been tiring?
mustn't they have been tiring?