must worst
Regular verb: worst - worsted- worsted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must worst
you must worst
he must worst
we must worst
you must worst
they must worst 	I must be worsting
you must be worsting
he must be worsting
we must be worsting
you must be worsting
they must be worsting	I must have worsted
you must have worsted
he must have worsted
we must have worsted
you must have worsted
they must have worsted	I must have been worsting
you must have been worsting
he must have been worsting
we must have been worsting
you must have been worsting
they must have been worsting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't worst
you mustn't worst
he mustn't worst
we mustn't worst
you mustn't worst
they mustn't worst 	I mustn't be worsting
you mustn't be worsting
he mustn't be worsting
we mustn't be worsting
you mustn't be worsting
they mustn't be worsting	I mustn't have worsted
you mustn't have worsted
he mustn't have worsted
we mustn't have worsted
you mustn't have worsted
they mustn't have worsted	I mustn't have been worsting
you mustn't have been worsting
he mustn't have been worsting
we mustn't have been worsting
you mustn't have been worsting
they mustn't have been worsting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I worst?
must you worst?
must he worst?
must we worst?
must you worst?
must they worst? 	must I be worsting?
must you be worsting?
must he be worsting?
must we be worsting?
must you be worsting?
must they be worsting? 	must I have worsted?
must you have worsted?
must he have worsted?
must we have worsted?
must you have worsted?
must they have worsted? 	must I have been worsting?
must you have been worsting?
must he have been worsting?
must we have been worsting?
must you have been worsting?
must they have been worsting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I worst?
mustn't you worst?
mustn't he worst?
mustn't we worst?
mustn't you worst?
mustn't they worst? 	mustn't I be worsting?
mustn't you be worsting?
mustn't he be worsting?
mustn't we be worsting?
mustn't you be worsting?
mustn't they be worsting? 	mustn't I have worsted?
mustn't you have worsted?
mustn't he have worsted?
mustn't we have worsted?
mustn't you have worsted?
mustn't they have worsted? 	mustn't I have been worsting?
mustn't you have been worsting?
mustn't he have been worsting?
mustn't we have been worsting?
mustn't you have been worsting?
mustn't they have been worsting?