English verb conjugation COULD QUIZ

Regular verb: quiz - quizzed - quizzed

Affirmation

Simple form

I could quiz
you could quiz
he could quiz
we could quiz
you could quiz
they could quiz

V-ing form

I could be quizzing
you could be quizzing
he could be quizzing
we could be quizzing
you could be quizzing
they could be quizzing

Perfect

I could have quizzed
you could have quizzed
he could have quizzed
we could have quizzed
you could have quizzed
they could have quizzed

V-ing perfect

I could have been quizzing
you could have been quizzing
he could have been quizzing
we could have been quizzing
you could have been quizzing
they could have been quizzing

Negation

Simple form

I could not quiz
you could not quiz
he could not quiz
we could not quiz
you could not quiz
they could not quiz

V-ing form

I could not be quizzing
you could not be quizzing
he could not be quizzing
we could not be quizzing
you could not be quizzing
they could not be quizzing

Perfect

I could not have quizzed
you could not have quizzed
he could not have quizzed
we could not have quizzed
you could not have quizzed
they could not have quizzed

V-ing perfect

I could not have been quizzing
you could not have been quizzing
he could not have been quizzing
we could not have been quizzing
you could not have been quizzing
they could not have been quizzing

Interrogative form

Simple form

could I quiz?
could you quiz?
could he quiz?
could we quiz?
could you quiz?
could they quiz?

V-ing form

could I be quizzing?
could you be quizzing?
could he be quizzing?
could we be quizzing?
could you be quizzing?
could they be quizzing?

Perfect

could I have quizzed?
could you have quizzed?
could he have quizzed?
could we have quizzed?
could you have quizzed?
could they have quizzed?

V-ing perfect

could I have been quizzing?
could you have been quizzing?
could he have been quizzing?
could we have been quizzing?
could you have been quizzing?
could they have been quizzing?

Interro-negative form

Simple form

could I not quiz?
could you not quiz?
could he not quiz?
could we not quiz?
could you not quiz?
could they not quiz?

V-ing form

could I not be quizzing?
could you not be quizzing?
could he not be quizzing?
could we not be quizzing?
could you not be quizzing?
could they not be quizzing?

Perfect

could I not have quizzed?
could you not have quizzed?
could he not have quizzed?
could we not have quizzed?
could you not have quizzed?
could they not have quizzed?

V-ing perfect

could I not have been quizzing?
could you not have been quizzing?
could he not have been quizzing?
could we not have been quizzing?
could you not have been quizzing?
could they not have been quizzing?

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