English verb conjugation
COULD STRUCTURE

Regular verb: structure - structured - structured

Affirmation

Simple form	V-ing form
I could structure you could structure she could structure we could structure you could structure they could structure	I could be structuring you could be structuring she could be structuring we could be structuring you could be structuring they could be structuring
Perfect	V-ing perfect
I could have structured you could have structured she could have structured we could have structured you could have structured they could have structured	I could have been structuring you could have been structuring she could have been structuring we could have been structuring you could have been structuring they could have been structuring

Negation

Simple form	V-ing form
I could not structure you could not structure she could not structure we could not structure you could not structure they could not structure	I could not be structuring you could not be structuring she could not be structuring we could not be structuring you could not be structuring they could not be structuring
Perfect	V-ing perfect
I could not have structured you could not have structured she could not have structured we could not have structured you could not have structured they could not have structured	I could not have been structuring you could not have been structuring she could not have been structuring we could not have been structuring you could not have been structuring they could not have been structuring

Interrogative form

Simple form	V-ing form
could I structure? could you structure? could she structure? could we structure? could you structure? could they structure?	could I be structuring? could you be structuring? could she be structuring? could we be structuring? could you be structuring? could they be structuring?
Perfect	V-ing perfect
could I have structured? could you have structured? could she have structured? could we have structured? could you have structured? could they have structured?	could I have been structuring? could you have been structuring? could she have been structuring? could we have been structuring? could you have been structuring? could they have been structuring?

Interro-negative form

Simple form	V-ing form
could I not structure? could you not structure? could she not structure? could we not structure? could you not structure? could they not structure?	could I not be structuring? could you not be structuring? could she not be structuring? could we not be structuring? could you not be structuring? could they not be structuring?
Perfect	V-ing perfect
could I not have structured? could you not have structured? could she not have structured? could we not have structured? could you not have structured? could they not have structured?	could I not have been structuring? could you not have been structuring? could she not have been structuring? could we not have been structuring? could you not have been structuring? could they not have been structuring?