must sweat
Regular verb: sweat - sweated- sweated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must sweat
you must sweat
he must sweat
we must sweat
you must sweat
they must sweat 	I must be sweating
you must be sweating
he must be sweating
we must be sweating
you must be sweating
they must be sweating	I must have sweated
you must have sweated
he must have sweated
we must have sweated
you must have sweated
they must have sweated	I must have been sweating
you must have been sweating
he must have been sweating
we must have been sweating
you must have been sweating
they must have been sweating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't sweat
you mustn't sweat
he mustn't sweat
we mustn't sweat
you mustn't sweat
they mustn't sweat 	I mustn't be sweating
you mustn't be sweating
he mustn't be sweating
we mustn't be sweating
you mustn't be sweating
they mustn't be sweating	I mustn't have sweated
you mustn't have sweated
he mustn't have sweated
we mustn't have sweated
you mustn't have sweated
they mustn't have sweated	I mustn't have been sweating
you mustn't have been sweating
he mustn't have been sweating
we mustn't have been sweating
you mustn't have been sweating
they mustn't have been sweating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I sweat?
must you sweat?
must he sweat?
must we sweat?
must you sweat?
must they sweat? 	must I be sweating?
must you be sweating?
must he be sweating?
must we be sweating?
must you be sweating?
must they be sweating? 	must I have sweated?
must you have sweated?
must he have sweated?
must we have sweated?
must you have sweated?
must they have sweated? 	must I have been sweating?
must you have been sweating?
must he have been sweating?
must we have been sweating?
must you have been sweating?
must they have been sweating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I sweat?
mustn't you sweat?
mustn't he sweat?
mustn't we sweat?
mustn't you sweat?
mustn't they sweat? 	mustn't I be sweating?
mustn't you be sweating?
mustn't he be sweating?
mustn't we be sweating?
mustn't you be sweating?
mustn't they be sweating? 	mustn't I have sweated?
mustn't you have sweated?
mustn't he have sweated?
mustn't we have sweated?
mustn't you have sweated?
mustn't they have sweated? 	mustn't I have been sweating?
mustn't you have been sweating?
mustn't he have been sweating?
mustn't we have been sweating?
mustn't you have been sweating?
mustn't they have been sweating?