English verb conjugation COULD PREPURCHASE

Regular verb: prepurchase - prepurchased - prepurchased

Affirmation

Simple form

I could prepurchase
you could prepurchase
he could prepurchase
we could prepurchase
you could prepurchase
they could prepurchase

V-ing form

I could be prepurchasing
you could be prepurchasing
he could be prepurchasing
we could be prepurchasing
you could be prepurchasing
they could be prepurchasing

Perfect

I could have prepurchased
you could have prepurchased
he could have prepurchased
we could have prepurchased
you could have prepurchased
they could have prepurchased

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I prepurchase?
could you prepurchase?
could he prepurchase?
could we prepurchase?
could you prepurchase?
could they prepurchase?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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