English verb conjugation
COULD VERSIFY

Regular verb: versify - versified - versified

Affirmation

Simple form	V-ing form
I could versify you could versify she could versify we could versify you could versify they could versify	I could be versifying you could be versifying she could be versifying we could be versifying you could be versifying they could be versifying
Perfect	V-ing perfect
I could have versified you could have versified she could have versified we could have versified you could have versified they could have versified	I could have been versifying you could have been versifying she could have been versifying we could have been versifying you could have been versifying they could have been versifying

Negation

Simple form	V-ing form
I could not versify you could not versify she could not versify we could not versify you could not versify they could not versify	I could not be versifying you could not be versifying she could not be versifying we could not be versifying you could not be versifying they could not be versifying
Perfect	V-ing perfect
I could not have versified you could not have versified she could not have versified we could not have versified you could not have versified they could not have versified	I could not have been versifying you could not have been versifying she could not have been versifying we could not have been versifying you could not have been versifying they could not have been versifying

Interrogative form

Simple form	V-ing form
could I versify? could you versify? could she versify? could we versify? could you versify? could they versify?	could I be versifying? could you be versifying? could she be versifying? could we be versifying? could you be versifying? could they be versifying?
Perfect	V-ing perfect
could I have versified? could you have versified? could she have versified? could we have versified? could you have versified? could they have versified?	could I have been versifying? could you have been versifying? could she have been versifying? could we have been versifying? could you have been versifying? could they have been versifying?

Interro-negative form

Simple form	V-ing form
could I not versify? could you not versify? could she not versify? could we not versify? could you not versify? could they not versify?	could I not be versifying? could you not be versifying? could she not be versifying? could we not be versifying? could you not be versifying? could they not be versifying?
Perfect	V-ing perfect
could I not have versified? could you not have versified? could she not have versified? could we not have versified? could you not have versified? could they not have versified?	could I not have been versifying? could you not have been versifying? could she not have been versifying? could we not have been versifying? could you not have been versifying? could they not have been versifying?