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 could not grave
you could not grave
he could not grave
we could not grave
you could not grave
they could not grave

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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