English verb conjugation COULD GRAFT

Regular verb: graft - grafted - grafted

Affirmation

Simple form

I could graft
you could graft
she could graft
we could graft
you could graft
they could graft

V-ing form

I could be grafting
you could be grafting
she could be grafting
we could be grafting
you could be grafting
they could be grafting

Perfect

I could have grafted
you could have grafted
she could have grafted
we could have grafted
you could have grafted
they could have grafted

V-ing perfect

I could have been grafting
you could have been grafting
she could have been grafting
we could have been grafting
you could have been grafting
they could have been grafting

Negation

Simple form

I could not graft
you could not graft
she could not graft
we could not graft
you could not graft
they could not graft

V-ing form

I could not be grafting
you could not be grafting
she could not be grafting
we could not be grafting
you could not be grafting
they could not be grafting

Perfect

I could not have grafted
you could not have grafted
she could not have grafted
we could not have grafted
you could not have grafted
they could not have grafted

V-ing perfect

I could not have been grafting
you could not have been grafting
she could not have been grafting
we could not have been grafting
you could not have been grafting
they could not have been grafting

Interrogative form

Simple form

could I graft?
could you graft?
could she graft?
could we graft?
could you graft?
could they graft?

V-ing form

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

Perfect

could I have grafted?
could you have grafted?
could she have grafted?
could we have grafted?
could you have grafted?
could they have grafted?

V-ing perfect

could I have been grafting?
could you have been grafting?
could she have been grafting?
could we have been grafting?
could you have been grafting?
could they have been grafting?

Interro-negative form

Simple form

could I not graft?
could you not graft?
could she not graft?
could we not graft?
could you not graft?
could they not graft?

V-ing form

could I not be grafting?
could you not be grafting?
could she not be grafting?
could we not be grafting?
could you not be grafting?
could they not be grafting?

Perfect

could I not have grafted?
could you not have grafted?
could she not have grafted?
could we not have grafted?
could you not have grafted?
could they not have grafted?

V-ing perfect

could I not have been grafting?
could you not have been grafting?
could she not have been grafting?
could we not have been grafting?
could you not have been grafting?
could they not have been grafting?

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