must vandalise
Regular verb: vandalise - vandalised- vandalised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must vandalise
you must vandalise
she must vandalise
we must vandalise
you must vandalise
they must vandalise 	I must be vandalising
you must be vandalising
she must be vandalising
we must be vandalising
you must be vandalising
they must be vandalising	I must have vandalised
you must have vandalised
she must have vandalised
we must have vandalised
you must have vandalised
they must have vandalised	I must have been vandalising
you must have been vandalising
she must have been vandalising
we must have been vandalising
you must have been vandalising
they must have been vandalising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't vandalise
you mustn't vandalise
she mustn't vandalise
we mustn't vandalise
you mustn't vandalise
they mustn't vandalise 	I mustn't be vandalising
you mustn't be vandalising
she mustn't be vandalising
we mustn't be vandalising
you mustn't be vandalising
they mustn't be vandalising	I mustn't have vandalised
you mustn't have vandalised
she mustn't have vandalised
we mustn't have vandalised
you mustn't have vandalised
they mustn't have vandalised	I mustn't have been vandalising
you mustn't have been vandalising
she mustn't have been vandalising
we mustn't have been vandalising
you mustn't have been vandalising
they mustn't have been vandalising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I vandalise?
must you vandalise?
must she vandalise?
must we vandalise?
must you vandalise?
must they vandalise? 	must I be vandalising?
must you be vandalising?
must she be vandalising?
must we be vandalising?
must you be vandalising?
must they be vandalising? 	must I have vandalised?
must you have vandalised?
must she have vandalised?
must we have vandalised?
must you have vandalised?
must they have vandalised? 	must I have been vandalising?
must you have been vandalising?
must she have been vandalising?
must we have been vandalising?
must you have been vandalising?
must they have been vandalising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I vandalise?
mustn't you vandalise?
mustn't she vandalise?
mustn't we vandalise?
mustn't you vandalise?
mustn't they vandalise? 	mustn't I be vandalising?
mustn't you be vandalising?
mustn't she be vandalising?
mustn't we be vandalising?
mustn't you be vandalising?
mustn't they be vandalising? 	mustn't I have vandalised?
mustn't you have vandalised?
mustn't she have vandalised?
mustn't we have vandalised?
mustn't you have vandalised?
mustn't they have vandalised? 	mustn't I have been vandalising?
mustn't you have been vandalising?
mustn't she have been vandalising?
mustn't we have been vandalising?
mustn't you have been vandalising?
mustn't they have been vandalising?