English verb conjugation
COULD KVETCH

Regular verb: kvetch - kvetched - kvetched

Affirmation

Simple form	V-ing form
I could kvetch you could kvetch he could kvetch we could kvetch you could kvetch they could kvetch	I could be kvetching you could be kvetching he could be kvetching we could be kvetching you could be kvetching they could be kvetching
Perfect	V-ing perfect
I could have kvetched you could have kvetched he could have kvetched we could have kvetched you could have kvetched they could have kvetched	I could have been kvetching you could have been kvetching he could have been kvetching we could have been kvetching you could have been kvetching they could have been kvetching

Negation

Simple form	V-ing form
I could not kvetch you could not kvetch he could not kvetch we could not kvetch you could not kvetch they could not kvetch	I could not be kvetching you could not be kvetching he could not be kvetching we could not be kvetching you could not be kvetching they could not be kvetching
Perfect	V-ing perfect
I could not have kvetched you could not have kvetched he could not have kvetched we could not have kvetched you could not have kvetched they could not have kvetched	I could not have been kvetching you could not have been kvetching he could not have been kvetching we could not have been kvetching you could not have been kvetching they could not have been kvetching

Interrogative form

Simple form	V-ing form
could I kvetch? could you kvetch? could he kvetch? could we kvetch? could you kvetch? could they kvetch?	could I be kvetching? could you be kvetching? could he be kvetching? could we be kvetching? could you be kvetching? could they be kvetching?
Perfect	V-ing perfect
could I have kvetched? could you have kvetched? could he have kvetched? could we have kvetched? could you have kvetched? could they have kvetched?	could I have been kvetching? could you have been kvetching? could he have been kvetching? could we have been kvetching? could you have been kvetching? could they have been kvetching?

Interro-negative form

Simple form	V-ing form
could I not kvetch? could you not kvetch? could he not kvetch? could we not kvetch? could you not kvetch? could they not kvetch?	could I not be kvetching? could you not be kvetching? could he not be kvetching? could we not be kvetching? could you not be kvetching? could they not be kvetching?
Perfect	V-ing perfect
could I not have kvetched? could you not have kvetched? could he not have kvetched? could we not have kvetched? could you not have kvetched? could they not have kvetched?	could I not have been kvetching? could you not have been kvetching? could he not have been kvetching? could we not have been kvetching? could you not have been kvetching? could they not have been kvetching?