English verb conjugation
COULD JAZZ

Regular verb: jazz - jazzed - jazzed

Affirmation

Simple form	V-ing form
I could jazz you could jazz she could jazz we could jazz you could jazz they could jazz	I could be jazzing you could be jazzing she could be jazzing we could be jazzing you could be jazzing they could be jazzing
Perfect	V-ing perfect
I could have jazzed you could have jazzed she could have jazzed we could have jazzed you could have jazzed they could have jazzed	I could have been jazzing you could have been jazzing she could have been jazzing we could have been jazzing you could have been jazzing they could have been jazzing

Negation

Simple form	V-ing form
I could not jazz you could not jazz she could not jazz we could not jazz you could not jazz they could not jazz	I could not be jazzing you could not be jazzing she could not be jazzing we could not be jazzing you could not be jazzing they could not be jazzing
Perfect	V-ing perfect
I could not have jazzed you could not have jazzed she could not have jazzed we could not have jazzed you could not have jazzed they could not have jazzed	I could not have been jazzing you could not have been jazzing she could not have been jazzing we could not have been jazzing you could not have been jazzing they could not have been jazzing

Interrogative form

Simple form	V-ing form
could I jazz? could you jazz? could she jazz? could we jazz? could you jazz? could they jazz?	could I be jazzing? could you be jazzing? could she be jazzing? could we be jazzing? could you be jazzing? could they be jazzing?
Perfect	V-ing perfect
could I have jazzed? could you have jazzed? could she have jazzed? could we have jazzed? could you have jazzed? could they have jazzed?	could I have been jazzing? could you have been jazzing? could she have been jazzing? could we have been jazzing? could you have been jazzing? could they have been jazzing?

Interro-negative form

Simple form	V-ing form
could I not jazz? could you not jazz? could she not jazz? could we not jazz? could you not jazz? could they not jazz?	could I not be jazzing? could you not be jazzing? could she not be jazzing? could we not be jazzing? could you not be jazzing? could they not be jazzing?
Perfect	V-ing perfect
could I not have jazzed? could you not have jazzed? could she not have jazzed? could we not have jazzed? could you not have jazzed? could they not have jazzed?	could I not have been jazzing? could you not have been jazzing? could she not have been jazzing? could we not have been jazzing? could you not have been jazzing? could they not have been jazzing?