English verb conjugation
COULD RUMBA

Regular verb: rumba - rumbaed - rumbaed

Affirmation

Simple form	V-ing form
I could rumba you could rumba he could rumba we could rumba you could rumba they could rumba	I could be rumbaing you could be rumbaing he could be rumbaing we could be rumbaing you could be rumbaing they could be rumbaing
Perfect	V-ing perfect
I could have rumbaed you could have rumbaed he could have rumbaed we could have rumbaed you could have rumbaed they could have rumbaed	I could have been rumbaing you could have been rumbaing he could have been rumbaing we could have been rumbaing you could have been rumbaing they could have been rumbaing

Negation

Simple form	V-ing form
I could not rumba you could not rumba he could not rumba we could not rumba you could not rumba they could not rumba	I could not be rumbaing you could not be rumbaing he could not be rumbaing we could not be rumbaing you could not be rumbaing they could not be rumbaing
Perfect	V-ing perfect
I could not have rumbaed you could not have rumbaed he could not have rumbaed we could not have rumbaed you could not have rumbaed they could not have rumbaed	I could not have been rumbaing you could not have been rumbaing he could not have been rumbaing we could not have been rumbaing you could not have been rumbaing they could not have been rumbaing

Interrogative form

Simple form	V-ing form
could I rumba? could you rumba? could he rumba? could we rumba? could you rumba? could they rumba?	could I be rumbaing? could you be rumbaing? could he be rumbaing? could we be rumbaing? could you be rumbaing? could they be rumbaing?
Perfect	V-ing perfect
could I have rumbaed? could you have rumbaed? could he have rumbaed? could we have rumbaed? could you have rumbaed? could they have rumbaed?	could I have been rumbaing? could you have been rumbaing? could he have been rumbaing? could we have been rumbaing? could you have been rumbaing? could they have been rumbaing?

Interro-negative form

Simple form	V-ing form
could I not rumba? could you not rumba? could he not rumba? could we not rumba? could you not rumba? could they not rumba?	could I not be rumbaing? could you not be rumbaing? could he not be rumbaing? could we not be rumbaing? could you not be rumbaing? could they not be rumbaing?
Perfect	V-ing perfect
could I not have rumbaed? could you not have rumbaed? could he not have rumbaed? could we not have rumbaed? could you not have rumbaed? could they not have rumbaed?	could I not have been rumbaing? could you not have been rumbaing? could he not have been rumbaing? could we not have been rumbaing? could you not have been rumbaing? could they not have been rumbaing?