English verb conjugation COULD UPSPRING

Irregular verb: upspring - upsprang, upsprung - upsprung

Affirmation

Simple form

I could upspring
you could upspring
he could upspring
we could upspring
you could upspring
they could upspring

V-ing form

I could be upspringing
you could be upspringing
he could be upspringing
we could be upspringing
you could be upspringing
they could be upspringing

Perfect

I could have upsprung
you could have upsprung
he could have upsprung
we could have upsprung
you could have upsprung
they could have upsprung

V-ing perfect

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

Negation

Simple form

I could not upspring
you could not upspring
he could not upspring
we could not upspring
you could not upspring
they could not upspring

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I upspring?
could you upspring?
could he upspring?
could we upspring?
could you upspring?
could they upspring?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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