could burnish
Regular verb: burnish - burnished- burnished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could burnish
you could burnish
he could burnish
we could burnish
you could burnish
they could burnish 	I could be burnishing
you could be burnishing
he could be burnishing
we could be burnishing
you could be burnishing
they could be burnishing	I could have burnished
you could have burnished
he could have burnished
we could have burnished
you could have burnished
they could have burnished	I could have been burnishing
you could have been burnishing
he could have been burnishing
we could have been burnishing
you could have been burnishing
they could have been burnishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not burnish
you could not burnish
he could not burnish
we could not burnish
you could not burnish
they could not burnish 	I could not be burnishing
you could not be burnishing
he could not be burnishing
we could not be burnishing
you could not be burnishing
they could not be burnishing	I could not have burnished
you could not have burnished
he could not have burnished
we could not have burnished
you could not have burnished
they could not have burnished	I could not have been burnishing
you could not have been burnishing
he could not have been burnishing
we could not have been burnishing
you could not have been burnishing
they could not have been burnishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I burnish?
could you burnish?
could he burnish?
could we burnish?
could you burnish?
could they burnish? 	could I be burnishing?
could you be burnishing?
could he be burnishing?
could we be burnishing?
could you be burnishing?
could they be burnishing? 	could I have burnished?
could you have burnished?
could he have burnished?
could we have burnished?
could you have burnished?
could they have burnished? 	could I have been burnishing?
could you have been burnishing?
could he have been burnishing?
could we have been burnishing?
could you have been burnishing?
could they have been burnishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not burnish?
could you not burnish?
could he not burnish?
could we not burnish?
could you not burnish?
could they not burnish? 	could I not be burnishing?
could you not be burnishing?
could he not be burnishing?
could we not be burnishing?
could you not be burnishing?
could they not be burnishing? 	could I not have burnished?
could you not have burnished?
could he not have burnished?
could we not have burnished?
could you not have burnished?
could they not have burnished? 	could I not have been burnishing?
could you not have been burnishing?
could he not have been burnishing?
could we not have been burnishing?
could you not have been burnishing?
could they not have been burnishing?