could vinify
Regular verb: vinify - vinified- vinified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could vinify
you could vinify
she could vinify
we could vinify
you could vinify
they could vinify 	I could be vinifying
you could be vinifying
she could be vinifying
we could be vinifying
you could be vinifying
they could be vinifying	I could have vinified
you could have vinified
she could have vinified
we could have vinified
you could have vinified
they could have vinified	I could have been vinifying
you could have been vinifying
she could have been vinifying
we could have been vinifying
you could have been vinifying
they could have been vinifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not vinify
you could not vinify
she could not vinify
we could not vinify
you could not vinify
they could not vinify 	I could not be vinifying
you could not be vinifying
she could not be vinifying
we could not be vinifying
you could not be vinifying
they could not be vinifying	I could not have vinified
you could not have vinified
she could not have vinified
we could not have vinified
you could not have vinified
they could not have vinified	I could not have been vinifying
you could not have been vinifying
she could not have been vinifying
we could not have been vinifying
you could not have been vinifying
they could not have been vinifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I vinify?
could you vinify?
could she vinify?
could we vinify?
could you vinify?
could they vinify? 	could I be vinifying?
could you be vinifying?
could she be vinifying?
could we be vinifying?
could you be vinifying?
could they be vinifying? 	could I have vinified?
could you have vinified?
could she have vinified?
could we have vinified?
could you have vinified?
could they have vinified? 	could I have been vinifying?
could you have been vinifying?
could she have been vinifying?
could we have been vinifying?
could you have been vinifying?
could they have been vinifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not vinify?
could you not vinify?
could she not vinify?
could we not vinify?
could you not vinify?
could they not vinify? 	could I not be vinifying?
could you not be vinifying?
could she not be vinifying?
could we not be vinifying?
could you not be vinifying?
could they not be vinifying? 	could I not have vinified?
could you not have vinified?
could she not have vinified?
could we not have vinified?
could you not have vinified?
could they not have vinified? 	could I not have been vinifying?
could you not have been vinifying?
could she not have been vinifying?
could we not have been vinifying?
could you not have been vinifying?
could they not have been vinifying?