English verb conjugation COULD ESTABLISH

Regular verb: establish - established - established

Affirmation

Simple form

I could establish
you could establish
he could establish
we could establish
you could establish
they could establish

V-ing form

I could be establishing
you could be establishing
he could be establishing
we could be establishing
you could be establishing
they could be establishing

Perfect

I could have established
you could have established
he could have established
we could have established
you could have established
they could have established

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I establish?
could you establish?
could he establish?
could we establish?
could you establish?
could they establish?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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