English verb conjugation COULD INDEX

Regular verb: index - indexed - indexed

Affirmation

Simple form

I could index
you could index
he could index
we could index
you could index
they could index

V-ing form

I could be indexing
you could be indexing
he could be indexing
we could be indexing
you could be indexing
they could be indexing

Perfect

I could have indexed
you could have indexed
he 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
he could have been indexing
we could have been indexing
you could have been indexing
they could have been indexing

Negation

Simple form

I could not index
you could not index
he could not index
we could not index
you could not index
they could not index

V-ing form

I could not be indexing
you could not be indexing
he could not be indexing
we could not be indexing
you could not be indexing
they could not be indexing

Perfect

I could not have indexed
you could not have indexed
he could not have indexed
we could not have indexed
you could not have indexed
they could not have indexed

V-ing perfect

I could not have been indexing
you could not have been indexing
he could not have been indexing
we could not have been indexing
you could not have been indexing
they could not have been indexing

Interrogative form

Simple form

could I index?
could you index?
could he index?
could we index?
could you index?
could they index?

V-ing form

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

Perfect

could I have indexed?
could you have indexed?
could he 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 he have been indexing?
could we have been indexing?
could you have been indexing?
could they have been indexing?

Interro-negative form

Simple form

could I not index?
could you not index?
could he not index?
could we not index?
could you not index?
could they not index?

V-ing form

could I not be indexing?
could you not be indexing?
could he not be indexing?
could we not be indexing?
could you not be indexing?
could they not be indexing?

Perfect

could I not have indexed?
could you not have indexed?
could he not have indexed?
could we not have indexed?
could you not have indexed?
could they not have indexed?

V-ing perfect

could I not have been indexing?
could you not have been indexing?
could he not have been indexing?
could we not have been indexing?
could you not have been indexing?
could they not have been indexing?

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