English verb conjugation
CAN CONSTRUCT

Regular verb: construct - constructed - constructed

Affirmation

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

Negation

Simple form	V-ing form
I cannot construct you cannot construct she cannot construct we cannot construct you cannot construct they cannot construct	I cannot be constructing you cannot be constructing she cannot be constructing we cannot be constructing you cannot be constructing they cannot be constructing
Perfect	V-ing perfect
I cannot have constructed you cannot have constructed she cannot have constructed we cannot have constructed you cannot have constructed they cannot have constructed	I cannot have been constructing you cannot have been constructing she cannot have been constructing we cannot have been constructing you cannot have been constructing they cannot have been constructing

Interrogative form

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

Interro-negative form

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