English verb conjugation COULD REPRODUCE

Regular verb: reproduce - reproduced - reproduced

Affirmation

Simple form

I could reproduce
you could reproduce
he could reproduce
we could reproduce
you could reproduce
they could reproduce

V-ing form

I could be reproducing
you could be reproducing
he could be reproducing
we could be reproducing
you could be reproducing
they could be reproducing

Perfect

I could have reproduced
you could have reproduced
he could have reproduced
we could have reproduced
you could have reproduced
they could have reproduced

V-ing perfect

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

Negation

Simple form

I couldn't reproduce
you couldn't reproduce
he couldn't reproduce
we couldn't reproduce
you couldn't reproduce
they couldn't reproduce

V-ing form

I couldn't be reproducing
you couldn't be reproducing
he couldn't be reproducing
we couldn't be reproducing
you couldn't be reproducing
they couldn't be reproducing

Perfect

I couldn't have reproduced
you couldn't have reproduced
he couldn't have reproduced
we couldn't have reproduced
you couldn't have reproduced
they couldn't have reproduced

V-ing perfect

I couldn't have been reproducing
you couldn't have been reproducing
he couldn't have been reproducing
we couldn't have been reproducing
you couldn't have been reproducing
they couldn't have been reproducing

Interrogative form

Simple form

could I reproduce?
could you reproduce?
could he reproduce?
could we reproduce?
could you reproduce?
could they reproduce?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I reproduce?
couldn't you reproduce?
couldn't he reproduce?
couldn't we reproduce?
couldn't you reproduce?
couldn't they reproduce?

V-ing form

couldn't I be reproducing?
couldn't you be reproducing?
couldn't he be reproducing?
couldn't we be reproducing?
couldn't you be reproducing?
couldn't they be reproducing?

Perfect

couldn't I have reproduced?
couldn't you have reproduced?
couldn't he have reproduced?
couldn't we have reproduced?
couldn't you have reproduced?
couldn't they have reproduced?

V-ing perfect

couldn't I have been reproducing?
couldn't you have been reproducing?
couldn't he have been reproducing?
couldn't we have been reproducing?
couldn't you have been reproducing?
couldn't they have been reproducing?

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