English verb conjugation COULD GRAFT

Regular verb: graft - grafted - grafted

Affirmation

Simple form

I could graft
you could graft
he could graft
we could graft
you could graft
they could graft

V-ing form

I could be grafting
you could be grafting
he could be grafting
we could be grafting
you could be grafting
they could be grafting

Perfect

I could have grafted
you could have grafted
he 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
he could have been grafting
we could have been grafting
you could have been grafting
they could have been grafting

Negation

Simple form

I couldn't graft
you couldn't graft
he couldn't graft
we couldn't graft
you couldn't graft
they couldn't graft

V-ing form

I couldn't be grafting
you couldn't be grafting
he couldn't be grafting
we couldn't be grafting
you couldn't be grafting
they couldn't be grafting

Perfect

I couldn't have grafted
you couldn't have grafted
he couldn't have grafted
we couldn't have grafted
you couldn't have grafted
they couldn't have grafted

V-ing perfect

I couldn't have been grafting
you couldn't have been grafting
he couldn't have been grafting
we couldn't have been grafting
you couldn't have been grafting
they couldn't have been grafting

Interrogative form

Simple form

could I graft?
could you graft?
could he graft?
could we graft?
could you graft?
could they graft?

V-ing form

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

Perfect

could I have grafted?
could you have grafted?
could he 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 he have been grafting?
could we have been grafting?
could you have been grafting?
could they have been grafting?

Interro-negative form

Simple form

couldn't I graft?
couldn't you graft?
couldn't he graft?
couldn't we graft?
couldn't you graft?
couldn't they graft?

V-ing form

couldn't I be grafting?
couldn't you be grafting?
couldn't he be grafting?
couldn't we be grafting?
couldn't you be grafting?
couldn't they be grafting?

Perfect

couldn't I have grafted?
couldn't you have grafted?
couldn't he have grafted?
couldn't we have grafted?
couldn't you have grafted?
couldn't they have grafted?

V-ing perfect

couldn't I have been grafting?
couldn't you have been grafting?
couldn't he have been grafting?
couldn't we have been grafting?
couldn't you have been grafting?
couldn't they have been grafting?

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