English verb conjugation
COULD CROSS-INDEX

Regular verb: cross-index - cross-indexed - cross-indexed

Affirmation

Simple form	V-ing form
I could cross-index you could cross-index she could cross-index we could cross-index you could cross-index they could cross-index	I could be cross-indexing you could be cross-indexing she could be cross-indexing we could be cross-indexing you could be cross-indexing they could be cross-indexing
Perfect	V-ing perfect
I could have cross-indexed you could have cross-indexed she could have cross-indexed we could have cross-indexed you could have cross-indexed they could have cross-indexed	I could have been cross-indexing you could have been cross-indexing she could have been cross-indexing we could have been cross-indexing you could have been cross-indexing they could have been cross-indexing

Negation

Simple form	V-ing form
I could not cross-index you could not cross-index she could not cross-index we could not cross-index you could not cross-index they could not cross-index	I could not be cross-indexing you could not be cross-indexing she could not be cross-indexing we could not be cross-indexing you could not be cross-indexing they could not be cross-indexing
Perfect	V-ing perfect
I could not have cross-indexed you could not have cross-indexed she could not have cross-indexed we could not have cross-indexed you could not have cross-indexed they could not have cross-indexed	I could not have been cross-indexing you could not have been cross-indexing she could not have been cross-indexing we could not have been cross-indexing you could not have been cross-indexing they could not have been cross-indexing

Interrogative form

Simple form	V-ing form
could I cross-index? could you cross-index? could she cross-index? could we cross-index? could you cross-index? could they cross-index?	could I be cross-indexing? could you be cross-indexing? could she be cross-indexing? could we be cross-indexing? could you be cross-indexing? could they be cross-indexing?
Perfect	V-ing perfect
could I have cross-indexed? could you have cross-indexed? could she have cross-indexed? could we have cross-indexed? could you have cross-indexed? could they have cross-indexed?	could I have been cross-indexing? could you have been cross-indexing? could she have been cross-indexing? could we have been cross-indexing? could you have been cross-indexing? could they have been cross-indexing?

Interro-negative form

Simple form	V-ing form
could I not cross-index? could you not cross-index? could she not cross-index? could we not cross-index? could you not cross-index? could they not cross-index?	could I not be cross-indexing? could you not be cross-indexing? could she not be cross-indexing? could we not be cross-indexing? could you not be cross-indexing? could they not be cross-indexing?
Perfect	V-ing perfect
could I not have cross-indexed? could you not have cross-indexed? could she not have cross-indexed? could we not have cross-indexed? could you not have cross-indexed? could they not have cross-indexed?	could I not have been cross-indexing? could you not have been cross-indexing? could she not have been cross-indexing? could we not have been cross-indexing? could you not have been cross-indexing? could they not have been cross-indexing?