English verb conjugation
COULD KVETCH

Regular verb: kvetch - kvetched - kvetched

Affirmation

Simple form	V-ing form
I could kvetch you could kvetch she could kvetch we could kvetch you could kvetch they could kvetch	I could be kvetching you could be kvetching she 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 she 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 she 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 couldn't kvetch you couldn't kvetch she couldn't kvetch we couldn't kvetch you couldn't kvetch they couldn't kvetch	I couldn't be kvetching you couldn't be kvetching she couldn't be kvetching we couldn't be kvetching you couldn't be kvetching they couldn't be kvetching
Perfect	V-ing perfect
I couldn't have kvetched you couldn't have kvetched she couldn't have kvetched we couldn't have kvetched you couldn't have kvetched they couldn't have kvetched	I couldn't have been kvetching you couldn't have been kvetching she couldn't have been kvetching we couldn't have been kvetching you couldn't have been kvetching they couldn't have been kvetching

Interrogative form

Simple form	V-ing form
could I kvetch? could you kvetch? could she kvetch? could we kvetch? could you kvetch? could they kvetch?	could I be kvetching? could you be kvetching? could she 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 she 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 she 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
couldn't I kvetch? couldn't you kvetch? couldn't she kvetch? couldn't we kvetch? couldn't you kvetch? couldn't they kvetch?	couldn't I be kvetching? couldn't you be kvetching? couldn't she be kvetching? couldn't we be kvetching? couldn't you be kvetching? couldn't they be kvetching?
Perfect	V-ing perfect
couldn't I have kvetched? couldn't you have kvetched? couldn't she have kvetched? couldn't we have kvetched? couldn't you have kvetched? couldn't they have kvetched?	couldn't I have been kvetching? couldn't you have been kvetching? couldn't she have been kvetching? couldn't we have been kvetching? couldn't you have been kvetching? couldn't they have been kvetching?