English verb conjugation
CAN ERECT

Regular verb: erect - erected - erected

Affirmation

Simple form	V-ing form
I can erect you can erect he can erect we can erect you can erect they can erect	I can be erecting you can be erecting he can be erecting we can be erecting you can be erecting they can be erecting
Perfect	V-ing perfect
I can have erected you can have erected he can have erected we can have erected you can have erected they can have erected	I can have been erecting you can have been erecting he can have been erecting we can have been erecting you can have been erecting they can have been erecting

Negation

Simple form	V-ing form
I cannot erect you cannot erect he cannot erect we cannot erect you cannot erect they cannot erect	I cannot be erecting you cannot be erecting he cannot be erecting we cannot be erecting you cannot be erecting they cannot be erecting
Perfect	V-ing perfect
I cannot have erected you cannot have erected he cannot have erected we cannot have erected you cannot have erected they cannot have erected	I cannot have been erecting you cannot have been erecting he cannot have been erecting we cannot have been erecting you cannot have been erecting they cannot have been erecting

Interrogative form

Simple form	V-ing form
can I erect? can you erect? can he erect? can we erect? can you erect? can they erect?	can I be erecting? can you be erecting? can he be erecting? can we be erecting? can you be erecting? can they be erecting?
Perfect	V-ing perfect
can I have erected? can you have erected? can he have erected? can we have erected? can you have erected? can they have erected?	can I have been erecting? can you have been erecting? can he have been erecting? can we have been erecting? can you have been erecting? can they have been erecting?

Interro-negative form

Simple form	V-ing form
can I not erect? can you not erect? can he not erect? can we not erect? can you not erect? can they not erect?	can I not be erecting? can you not be erecting? can he not be erecting? can we not be erecting? can you not be erecting? can they not be erecting?
Perfect	V-ing perfect
can I not have erected? can you not have erected? can he not have erected? can we not have erected? can you not have erected? can they not have erected?	can I not have been erecting? can you not have been erecting? can he not have been erecting? can we not have been erecting? can you not have been erecting? can they not have been erecting?