English verb conjugation COULD UPSTART

Regular verb: upstart - upstarted - upstarted

Affirmation

Simple form

I could upstart
you could upstart
he could upstart
we could upstart
you could upstart
they could upstart

V-ing form

I could be upstarting
you could be upstarting
he could be upstarting
we could be upstarting
you could be upstarting
they could be upstarting

Perfect

I could have upstarted
you could have upstarted
he could have upstarted
we could have upstarted
you could have upstarted
they could have upstarted

V-ing perfect

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

Negation

Simple form

I could not upstart
you could not upstart
he could not upstart
we could not upstart
you could not upstart
they could not upstart

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I upstart?
could you upstart?
could he upstart?
could we upstart?
could you upstart?
could they upstart?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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