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 couldn't upstart
you couldn't upstart
he couldn't upstart
we couldn't upstart
you couldn't upstart
they couldn't upstart

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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