must sweat
Regular verb: sweat - sweated- sweated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must sweat
you must sweat
she must sweat
we must sweat
you must sweat
they must sweat 	I must be sweating
you must be sweating
she must be sweating
we must be sweating
you must be sweating
they must be sweating	I must have sweated
you must have sweated
she 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
she 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
she 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
she 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
she 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
she 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 she sweat?
must we sweat?
must you sweat?
must they sweat? 	must I be sweating?
must you be sweating?
must she be sweating?
must we be sweating?
must you be sweating?
must they be sweating? 	must I have sweated?
must you have sweated?
must she 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 she 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 she 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 she 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 she 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 she have been sweating?
mustn't we have been sweating?
mustn't you have been sweating?
mustn't they have been sweating?