could knight
Regular verb: knight - knighted- knighted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could knight
you could knight
she could knight
we could knight
you could knight
they could knight 	I could be knighting
you could be knighting
she could be knighting
we could be knighting
you could be knighting
they could be knighting	I could have knighted
you could have knighted
she could have knighted
we could have knighted
you could have knighted
they could have knighted	I could have been knighting
you could have been knighting
she could have been knighting
we could have been knighting
you could have been knighting
they could have been knighting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not knight
you could not knight
she could not knight
we could not knight
you could not knight
they could not knight 	I could not be knighting
you could not be knighting
she could not be knighting
we could not be knighting
you could not be knighting
they could not be knighting	I could not have knighted
you could not have knighted
she could not have knighted
we could not have knighted
you could not have knighted
they could not have knighted	I could not have been knighting
you could not have been knighting
she could not have been knighting
we could not have been knighting
you could not have been knighting
they could not have been knighting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I knight?
could you knight?
could she knight?
could we knight?
could you knight?
could they knight? 	could I be knighting?
could you be knighting?
could she be knighting?
could we be knighting?
could you be knighting?
could they be knighting? 	could I have knighted?
could you have knighted?
could she have knighted?
could we have knighted?
could you have knighted?
could they have knighted? 	could I have been knighting?
could you have been knighting?
could she have been knighting?
could we have been knighting?
could you have been knighting?
could they have been knighting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not knight?
could you not knight?
could she not knight?
could we not knight?
could you not knight?
could they not knight? 	could I not be knighting?
could you not be knighting?
could she not be knighting?
could we not be knighting?
could you not be knighting?
could they not be knighting? 	could I not have knighted?
could you not have knighted?
could she not have knighted?
could we not have knighted?
could you not have knighted?
could they not have knighted? 	could I not have been knighting?
could you not have been knighting?
could she not have been knighting?
could we not have been knighting?
could you not have been knighting?
could they not have been knighting?