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 must not worst
you must not worst
he must not worst
we must not worst
you must not worst
they must not worst 	I must not be worsting
you must not be worsting
he must not be worsting
we must not be worsting
you must not be worsting
they must not be worsting	I must not have worsted
you must not have worsted
he must not have worsted
we must not have worsted
you must not have worsted
they must not have worsted	I must not have been worsting
you must not have been worsting
he must not have been worsting
we must not have been worsting
you must not have been worsting
they must not 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 	
must I not worst?
must you not worst?
must he not worst?
must we not worst?
must you not worst?
must they not worst? 	must I not be worsting?
must you not be worsting?
must he not be worsting?
must we not be worsting?
must you not be worsting?
must they not be worsting? 	must I not have worsted?
must you not have worsted?
must he not have worsted?
must we not have worsted?
must you not have worsted?
must they not have worsted? 	must I not have been worsting?
must you not have been worsting?
must he not have been worsting?
must we not have been worsting?
must you not have been worsting?
must they not have been worsting?