English verb conjugation COULD THINK BACK

Regular verb: think back - think backed - think backed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form

I could think back
you could think back
he could think back
we could think back
you could think back
they could think back

V-ing form

I could be think backing
you could be think backing
he could be think backing
we could be think backing
you could be think backing
they could be think backing

Perfect

I could have think backed
you could have think backed
he could have think backed
we could have think backed
you could have think backed
they could have think backed

V-ing perfect

I could have been think backing
you could have been think backing
he could have been think backing
we could have been think backing
you could have been think backing
they could have been think backing

Negation

Simple form

I could not think back
you could not think back
he could not think back
we could not think back
you could not think back
they could not think back

V-ing form

I could not be think backing
you could not be think backing
he could not be think backing
we could not be think backing
you could not be think backing
they could not be think backing

Perfect

I could not have think backed
you could not have think backed
he could not have think backed
we could not have think backed
you could not have think backed
they could not have think backed

V-ing perfect

I could not have been think backing
you could not have been think backing
he could not have been think backing
we could not have been think backing
you could not have been think backing
they could not have been think backing

Interrogative form

Simple form

could I think back?
could you think back?
could he think back?
could we think back?
could you think back?
could they think back?

V-ing form

could I be think backing?
could you be think backing?
could he be think backing?
could we be think backing?
could you be think backing?
could they be think backing?

Perfect

could I have think backed?
could you have think backed?
could he have think backed?
could we have think backed?
could you have think backed?
could they have think backed?

V-ing perfect

could I have been think backing?
could you have been think backing?
could he have been think backing?
could we have been think backing?
could you have been think backing?
could they have been think backing?

Interro-negative form

Simple form

could I not think back?
could you not think back?
could he not think back?
could we not think back?
could you not think back?
could they not think back?

V-ing form

could I not be think backing?
could you not be think backing?
could he not be think backing?
could we not be think backing?
could you not be think backing?
could they not be think backing?

Perfect

could I not have think backed?
could you not have think backed?
could he not have think backed?
could we not have think backed?
could you not have think backed?
could they not have think backed?

V-ing perfect

could I not have been think backing?
could you not have been think backing?
could he not have been think backing?
could we not have been think backing?
could you not have been think backing?
could they not have been think backing?

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