could french-polish
Regular verb: french-polish - french-polished- french-polished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could french-polish
you could french-polish
he could french-polish
we could french-polish
you could french-polish
they could french-polish 	I could be french-polishing
you could be french-polishing
he could be french-polishing
we could be french-polishing
you could be french-polishing
they could be french-polishing	I could have french-polished
you could have french-polished
he could have french-polished
we could have french-polished
you could have french-polished
they could have french-polished	I could have been french-polishing
you could have been french-polishing
he could have been french-polishing
we could have been french-polishing
you could have been french-polishing
they could have been french-polishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not french-polish
you could not french-polish
he could not french-polish
we could not french-polish
you could not french-polish
they could not french-polish 	I could not be french-polishing
you could not be french-polishing
he could not be french-polishing
we could not be french-polishing
you could not be french-polishing
they could not be french-polishing	I could not have french-polished
you could not have french-polished
he could not have french-polished
we could not have french-polished
you could not have french-polished
they could not have french-polished	I could not have been french-polishing
you could not have been french-polishing
he could not have been french-polishing
we could not have been french-polishing
you could not have been french-polishing
they could not have been french-polishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I french-polish?
could you french-polish?
could he french-polish?
could we french-polish?
could you french-polish?
could they french-polish? 	could I be french-polishing?
could you be french-polishing?
could he be french-polishing?
could we be french-polishing?
could you be french-polishing?
could they be french-polishing? 	could I have french-polished?
could you have french-polished?
could he have french-polished?
could we have french-polished?
could you have french-polished?
could they have french-polished? 	could I have been french-polishing?
could you have been french-polishing?
could he have been french-polishing?
could we have been french-polishing?
could you have been french-polishing?
could they have been french-polishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not french-polish?
could you not french-polish?
could he not french-polish?
could we not french-polish?
could you not french-polish?
could they not french-polish? 	could I not be french-polishing?
could you not be french-polishing?
could he not be french-polishing?
could we not be french-polishing?
could you not be french-polishing?
could they not be french-polishing? 	could I not have french-polished?
could you not have french-polished?
could he not have french-polished?
could we not have french-polished?
could you not have french-polished?
could they not have french-polished? 	could I not have been french-polishing?
could you not have been french-polishing?
could he not have been french-polishing?
could we not have been french-polishing?
could you not have been french-polishing?
could they not have been french-polishing?