English verb conjugation COULD GRIEVE

Regular verb: grieve - grieved - grieved

Affirmation

Simple form

I could grieve
you could grieve
she could grieve
we could grieve
you could grieve
they could grieve

V-ing form

I could be grieving
you could be grieving
she could be grieving
we could be grieving
you could be grieving
they could be grieving

Perfect

I could have grieved
you could have grieved
she 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
she could have been grieving
we could have been grieving
you could have been grieving
they could have been grieving

Negation

Simple form

I couldn't grieve
you couldn't grieve
she couldn't grieve
we couldn't grieve
you couldn't grieve
they couldn't grieve

V-ing form

I couldn't be grieving
you couldn't be grieving
she couldn't be grieving
we couldn't be grieving
you couldn't be grieving
they couldn't be grieving

Perfect

I couldn't have grieved
you couldn't have grieved
she couldn't have grieved
we couldn't have grieved
you couldn't have grieved
they couldn't have grieved

V-ing perfect

I couldn't have been grieving
you couldn't have been grieving
she couldn't have been grieving
we couldn't have been grieving
you couldn't have been grieving
they couldn't have been grieving

Interrogative form

Simple form

could I grieve?
could you grieve?
could she grieve?
could we grieve?
could you grieve?
could they grieve?

V-ing form

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

Perfect

could I have grieved?
could you have grieved?
could she 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 she have been grieving?
could we have been grieving?
could you have been grieving?
could they have been grieving?

Interro-negative form

Simple form

couldn't I grieve?
couldn't you grieve?
couldn't she grieve?
couldn't we grieve?
couldn't you grieve?
couldn't they grieve?

V-ing form

couldn't I be grieving?
couldn't you be grieving?
couldn't she be grieving?
couldn't we be grieving?
couldn't you be grieving?
couldn't they be grieving?

Perfect

couldn't I have grieved?
couldn't you have grieved?
couldn't she have grieved?
couldn't we have grieved?
couldn't you have grieved?
couldn't they have grieved?

V-ing perfect

couldn't I have been grieving?
couldn't you have been grieving?
couldn't she have been grieving?
couldn't we have been grieving?
couldn't you have been grieving?
couldn't they have been grieving?

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