English verb conjugation COULD GRAVE

Regular verb: grave - graved - graved

Affirmation

Simple form

I could grave
you could grave
he could grave
we could grave
you could grave
they could grave

V-ing form

I could be graving
you could be graving
he could be graving
we could be graving
you could be graving
they could be graving

Perfect

I could have graved
you could have graved
he could have graved
we could have graved
you could have graved
they could have graved

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I grave?
could you grave?
could he grave?
could we grave?
could you grave?
could they grave?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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