English verb conjugation COULD GRIEVE

Regular verb: grieve - grieved - grieved

Affirmation

Simple form

I could grieve
you could grieve
he could grieve
we could grieve
you could grieve
they could grieve

V-ing form

I could be grieving
you could be grieving
he could be grieving
we could be grieving
you could be grieving
they could be grieving

Perfect

I could have grieved
you could have grieved
he could have grieved
we could have grieved
you could have grieved
they could have grieved

V-ing perfect

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

Negation

Simple form

I could not grieve
you could not grieve
he could not grieve
we could not grieve
you could not grieve
they could not grieve

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I grieve?
could you grieve?
could he grieve?
could we grieve?
could you grieve?
could they grieve?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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