English verb conjugation COULD DOUBLE-CHECK

Regular verb: double-check - double-checked - double-checked

Affirmation

Simple form

I could double-check
you could double-check
he could double-check
we could double-check
you could double-check
they could double-check

V-ing form

I could be double-checking
you could be double-checking
he could be double-checking
we could be double-checking
you could be double-checking
they could be double-checking

Perfect

I could have double-checked
you could have double-checked
he could have double-checked
we could have double-checked
you could have double-checked
they could have double-checked

V-ing perfect

I could have been double-checking
you could have been double-checking
he could have been double-checking
we could have been double-checking
you could have been double-checking
they could have been double-checking

Negation

Simple form

I could not double-check
you could not double-check
he could not double-check
we could not double-check
you could not double-check
they could not double-check

V-ing form

I could not be double-checking
you could not be double-checking
he could not be double-checking
we could not be double-checking
you could not be double-checking
they could not be double-checking

Perfect

I could not have double-checked
you could not have double-checked
he could not have double-checked
we could not have double-checked
you could not have double-checked
they could not have double-checked

V-ing perfect

I could not have been double-checking
you could not have been double-checking
he could not have been double-checking
we could not have been double-checking
you could not have been double-checking
they could not have been double-checking

Interrogative form

Simple form

could I double-check?
could you double-check?
could he double-check?
could we double-check?
could you double-check?
could they double-check?

V-ing form

could I be double-checking?
could you be double-checking?
could he be double-checking?
could we be double-checking?
could you be double-checking?
could they be double-checking?

Perfect

could I have double-checked?
could you have double-checked?
could he have double-checked?
could we have double-checked?
could you have double-checked?
could they have double-checked?

V-ing perfect

could I have been double-checking?
could you have been double-checking?
could he have been double-checking?
could we have been double-checking?
could you have been double-checking?
could they have been double-checking?

Interro-negative form

Simple form

could I not double-check?
could you not double-check?
could he not double-check?
could we not double-check?
could you not double-check?
could they not double-check?

V-ing form

could I not be double-checking?
could you not be double-checking?
could he not be double-checking?
could we not be double-checking?
could you not be double-checking?
could they not be double-checking?

Perfect

could I not have double-checked?
could you not have double-checked?
could he not have double-checked?
could we not have double-checked?
could you not have double-checked?
could they not have double-checked?

V-ing perfect

could I not have been double-checking?
could you not have been double-checking?
could he not have been double-checking?
could we not have been double-checking?
could you not have been double-checking?
could they not have been double-checking?

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