must wreak
Regular verb: wreak - wreaked- wreaked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must wreak
you must wreak
she must wreak
we must wreak
you must wreak
they must wreak 	I must be wreaking
you must be wreaking
she must be wreaking
we must be wreaking
you must be wreaking
they must be wreaking	I must have wreaked
you must have wreaked
she must have wreaked
we must have wreaked
you must have wreaked
they must have wreaked	I must have been wreaking
you must have been wreaking
she must have been wreaking
we must have been wreaking
you must have been wreaking
they must have been wreaking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't wreak
you mustn't wreak
she mustn't wreak
we mustn't wreak
you mustn't wreak
they mustn't wreak 	I mustn't be wreaking
you mustn't be wreaking
she mustn't be wreaking
we mustn't be wreaking
you mustn't be wreaking
they mustn't be wreaking	I mustn't have wreaked
you mustn't have wreaked
she mustn't have wreaked
we mustn't have wreaked
you mustn't have wreaked
they mustn't have wreaked	I mustn't have been wreaking
you mustn't have been wreaking
she mustn't have been wreaking
we mustn't have been wreaking
you mustn't have been wreaking
they mustn't have been wreaking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I wreak?
must you wreak?
must she wreak?
must we wreak?
must you wreak?
must they wreak? 	must I be wreaking?
must you be wreaking?
must she be wreaking?
must we be wreaking?
must you be wreaking?
must they be wreaking? 	must I have wreaked?
must you have wreaked?
must she have wreaked?
must we have wreaked?
must you have wreaked?
must they have wreaked? 	must I have been wreaking?
must you have been wreaking?
must she have been wreaking?
must we have been wreaking?
must you have been wreaking?
must they have been wreaking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I wreak?
mustn't you wreak?
mustn't she wreak?
mustn't we wreak?
mustn't you wreak?
mustn't they wreak? 	mustn't I be wreaking?
mustn't you be wreaking?
mustn't she be wreaking?
mustn't we be wreaking?
mustn't you be wreaking?
mustn't they be wreaking? 	mustn't I have wreaked?
mustn't you have wreaked?
mustn't she have wreaked?
mustn't we have wreaked?
mustn't you have wreaked?
mustn't they have wreaked? 	mustn't I have been wreaking?
mustn't you have been wreaking?
mustn't she have been wreaking?
mustn't we have been wreaking?
mustn't you have been wreaking?
mustn't they have been wreaking?