could microfilm
Regular verb: microfilm - microfilmed- microfilmed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could microfilm
you could microfilm
he could microfilm
we could microfilm
you could microfilm
they could microfilm 	I could be microfilming
you could be microfilming
he could be microfilming
we could be microfilming
you could be microfilming
they could be microfilming	I could have microfilmed
you could have microfilmed
he could have microfilmed
we could have microfilmed
you could have microfilmed
they could have microfilmed	I could have been microfilming
you could have been microfilming
he could have been microfilming
we could have been microfilming
you could have been microfilming
they could have been microfilming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't microfilm
you couldn't microfilm
he couldn't microfilm
we couldn't microfilm
you couldn't microfilm
they couldn't microfilm 	I couldn't be microfilming
you couldn't be microfilming
he couldn't be microfilming
we couldn't be microfilming
you couldn't be microfilming
they couldn't be microfilming	I couldn't have microfilmed
you couldn't have microfilmed
he couldn't have microfilmed
we couldn't have microfilmed
you couldn't have microfilmed
they couldn't have microfilmed	I couldn't have been microfilming
you couldn't have been microfilming
he couldn't have been microfilming
we couldn't have been microfilming
you couldn't have been microfilming
they couldn't have been microfilming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I microfilm?
could you microfilm?
could he microfilm?
could we microfilm?
could you microfilm?
could they microfilm? 	could I be microfilming?
could you be microfilming?
could he be microfilming?
could we be microfilming?
could you be microfilming?
could they be microfilming? 	could I have microfilmed?
could you have microfilmed?
could he have microfilmed?
could we have microfilmed?
could you have microfilmed?
could they have microfilmed? 	could I have been microfilming?
could you have been microfilming?
could he have been microfilming?
could we have been microfilming?
could you have been microfilming?
could they have been microfilming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I microfilm?
couldn't you microfilm?
couldn't he microfilm?
couldn't we microfilm?
couldn't you microfilm?
couldn't they microfilm? 	couldn't I be microfilming?
couldn't you be microfilming?
couldn't he be microfilming?
couldn't we be microfilming?
couldn't you be microfilming?
couldn't they be microfilming? 	couldn't I have microfilmed?
couldn't you have microfilmed?
couldn't he have microfilmed?
couldn't we have microfilmed?
couldn't you have microfilmed?
couldn't they have microfilmed? 	couldn't I have been microfilming?
couldn't you have been microfilming?
couldn't he have been microfilming?
couldn't we have been microfilming?
couldn't you have been microfilming?
couldn't they have been microfilming?