English verb conjugation COULD INDEX

Regular verb: index - indexed - indexed

Affirmation

Simple form

I could index
you could index
she could index
we could index
you could index
they could index

V-ing form

I could be indexing
you could be indexing
she could be indexing
we could be indexing
you could be indexing
they could be indexing

Perfect

I could have indexed
you could have indexed
she could have indexed
we could have indexed
you could have indexed
they could have indexed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I index?
could you index?
could she index?
could we index?
could you index?
could they index?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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