English verb conjugation COULD GRIND

Irregular verb: grind - ground - ground

Affirmation

Simple form

I could grind
you could grind
he could grind
we could grind
you could grind
they could grind

V-ing form

I could be grinding
you could be grinding
he could be grinding
we could be grinding
you could be grinding
they could be grinding

Perfect

I could have ground
you could have ground
he could have ground
we could have ground
you could have ground
they could have ground

V-ing perfect

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

Negation

Simple form

I could not grind
you could not grind
he could not grind
we could not grind
you could not grind
they could not grind

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I grind?
could you grind?
could he grind?
could we grind?
could you grind?
could they grind?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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