must perspire
Regular verb: perspire - perspired- perspired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must perspire
you must perspire
he must perspire
we must perspire
you must perspire
they must perspire 	I must be perspiring
you must be perspiring
he must be perspiring
we must be perspiring
you must be perspiring
they must be perspiring	I must have perspired
you must have perspired
he must have perspired
we must have perspired
you must have perspired
they must have perspired	I must have been perspiring
you must have been perspiring
he must have been perspiring
we must have been perspiring
you must have been perspiring
they must have been perspiring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't perspire
you mustn't perspire
he mustn't perspire
we mustn't perspire
you mustn't perspire
they mustn't perspire 	I mustn't be perspiring
you mustn't be perspiring
he mustn't be perspiring
we mustn't be perspiring
you mustn't be perspiring
they mustn't be perspiring	I mustn't have perspired
you mustn't have perspired
he mustn't have perspired
we mustn't have perspired
you mustn't have perspired
they mustn't have perspired	I mustn't have been perspiring
you mustn't have been perspiring
he mustn't have been perspiring
we mustn't have been perspiring
you mustn't have been perspiring
they mustn't have been perspiring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I perspire?
must you perspire?
must he perspire?
must we perspire?
must you perspire?
must they perspire? 	must I be perspiring?
must you be perspiring?
must he be perspiring?
must we be perspiring?
must you be perspiring?
must they be perspiring? 	must I have perspired?
must you have perspired?
must he have perspired?
must we have perspired?
must you have perspired?
must they have perspired? 	must I have been perspiring?
must you have been perspiring?
must he have been perspiring?
must we have been perspiring?
must you have been perspiring?
must they have been perspiring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I perspire?
mustn't you perspire?
mustn't he perspire?
mustn't we perspire?
mustn't you perspire?
mustn't they perspire? 	mustn't I be perspiring?
mustn't you be perspiring?
mustn't he be perspiring?
mustn't we be perspiring?
mustn't you be perspiring?
mustn't they be perspiring? 	mustn't I have perspired?
mustn't you have perspired?
mustn't he have perspired?
mustn't we have perspired?
mustn't you have perspired?
mustn't they have perspired? 	mustn't I have been perspiring?
mustn't you have been perspiring?
mustn't he have been perspiring?
mustn't we have been perspiring?
mustn't you have been perspiring?
mustn't they have been perspiring?