English verb conjugation COULD UPHEAVE

Regular verb: upheave - upheaved - upheaved

Affirmation

Simple form

I could upheave
you could upheave
he could upheave
we could upheave
you could upheave
they could upheave

V-ing form

I could be upheaving
you could be upheaving
he could be upheaving
we could be upheaving
you could be upheaving
they could be upheaving

Perfect

I could have upheaved
you could have upheaved
he could have upheaved
we could have upheaved
you could have upheaved
they could have upheaved

V-ing perfect

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

Negation

Simple form

I couldn't upheave
you couldn't upheave
he couldn't upheave
we couldn't upheave
you couldn't upheave
they couldn't upheave

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I upheave?
could you upheave?
could he upheave?
could we upheave?
could you upheave?
could they upheave?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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