English verb conjugation
COULD CONSTRUCT

Regular verb: construct - constructed - constructed

Affirmation

Simple form	V-ing form
I could construct you could construct he could construct we could construct you could construct they could construct	I could be constructing you could be constructing he could be constructing we could be constructing you could be constructing they could be constructing
Perfect	V-ing perfect
I could have constructed you could have constructed he could have constructed we could have constructed you could have constructed they could have constructed	I could have been constructing you could have been constructing he could have been constructing we could have been constructing you could have been constructing they could have been constructing

Negation

Simple form	V-ing form
I could not construct you could not construct he could not construct we could not construct you could not construct they could not construct	I could not be constructing you could not be constructing he could not be constructing we could not be constructing you could not be constructing they could not be constructing
Perfect	V-ing perfect
I could not have constructed you could not have constructed he could not have constructed we could not have constructed you could not have constructed they could not have constructed	I could not have been constructing you could not have been constructing he could not have been constructing we could not have been constructing you could not have been constructing they could not have been constructing

Interrogative form

Simple form	V-ing form
could I construct? could you construct? could he construct? could we construct? could you construct? could they construct?	could I be constructing? could you be constructing? could he be constructing? could we be constructing? could you be constructing? could they be constructing?
Perfect	V-ing perfect
could I have constructed? could you have constructed? could he have constructed? could we have constructed? could you have constructed? could they have constructed?	could I have been constructing? could you have been constructing? could he have been constructing? could we have been constructing? could you have been constructing? could they have been constructing?

Interro-negative form

Simple form	V-ing form
could I not construct? could you not construct? could he not construct? could we not construct? could you not construct? could they not construct?	could I not be constructing? could you not be constructing? could he not be constructing? could we not be constructing? could you not be constructing? could they not be constructing?
Perfect	V-ing perfect
could I not have constructed? could you not have constructed? could he not have constructed? could we not have constructed? could you not have constructed? could they not have constructed?	could I not have been constructing? could you not have been constructing? could he not have been constructing? could we not have been constructing? could you not have been constructing? could they not have been constructing?