could worst
Regular verb: worst - worsted- worsted

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not worst
you could not worst
she could not worst
we could not worst
you could not worst
they could not worst 	I could not be worsting
you could not be worsting
she could not be worsting
we could not be worsting
you could not be worsting
they could not be worsting	I could not have worsted
you could not have worsted
she could not have worsted
we could not have worsted
you could not have worsted
they could not have worsted	I could not have been worsting
you could not have been worsting
she could not have been worsting
we could not have been worsting
you could not have been worsting
they could not have been worsting	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not worst?
could you not worst?
could she not worst?
could we not worst?
could you not worst?
could they not worst? 	could I not be worsting?
could you not be worsting?
could she not be worsting?
could we not be worsting?
could you not be worsting?
could they not be worsting? 	could I not have worsted?
could you not have worsted?
could she not have worsted?
could we not have worsted?
could you not have worsted?
could they not have worsted? 	could I not have been worsting?
could you not have been worsting?
could she not have been worsting?
could we not have been worsting?
could you not have been worsting?
could they not have been worsting?