must pervert
Regular verb: pervert - perverted- perverted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pervert
you must pervert
she must pervert
we must pervert
you must pervert
they must pervert 	I must be perverting
you must be perverting
she must be perverting
we must be perverting
you must be perverting
they must be perverting	I must have perverted
you must have perverted
she must have perverted
we must have perverted
you must have perverted
they must have perverted	I must have been perverting
you must have been perverting
she must have been perverting
we must have been perverting
you must have been perverting
they must have been perverting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't pervert
you mustn't pervert
she mustn't pervert
we mustn't pervert
you mustn't pervert
they mustn't pervert 	I mustn't be perverting
you mustn't be perverting
she mustn't be perverting
we mustn't be perverting
you mustn't be perverting
they mustn't be perverting	I mustn't have perverted
you mustn't have perverted
she mustn't have perverted
we mustn't have perverted
you mustn't have perverted
they mustn't have perverted	I mustn't have been perverting
you mustn't have been perverting
she mustn't have been perverting
we mustn't have been perverting
you mustn't have been perverting
they mustn't have been perverting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I pervert?
must you pervert?
must she pervert?
must we pervert?
must you pervert?
must they pervert? 	must I be perverting?
must you be perverting?
must she be perverting?
must we be perverting?
must you be perverting?
must they be perverting? 	must I have perverted?
must you have perverted?
must she have perverted?
must we have perverted?
must you have perverted?
must they have perverted? 	must I have been perverting?
must you have been perverting?
must she have been perverting?
must we have been perverting?
must you have been perverting?
must they have been perverting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I pervert?
mustn't you pervert?
mustn't she pervert?
mustn't we pervert?
mustn't you pervert?
mustn't they pervert? 	mustn't I be perverting?
mustn't you be perverting?
mustn't she be perverting?
mustn't we be perverting?
mustn't you be perverting?
mustn't they be perverting? 	mustn't I have perverted?
mustn't you have perverted?
mustn't she have perverted?
mustn't we have perverted?
mustn't you have perverted?
mustn't they have perverted? 	mustn't I have been perverting?
mustn't you have been perverting?
mustn't she have been perverting?
mustn't we have been perverting?
mustn't you have been perverting?
mustn't they have been perverting?