English verb conjugation
SHOULD INVIGILATE

Regular verb: invigilate - invigilated - invigilated

Affirmation

Simple form	V-ing form
I should invigilate you should invigilate she should invigilate we should invigilate you should invigilate they should invigilate	I should be invigilating you should be invigilating she should be invigilating we should be invigilating you should be invigilating they should be invigilating
Perfect	V-ing perfect
I should have invigilated you should have invigilated she should have invigilated we should have invigilated you should have invigilated they should have invigilated	I should have been invigilating you should have been invigilating she should have been invigilating we should have been invigilating you should have been invigilating they should have been invigilating

Negation

Simple form	V-ing form
I should not invigilate you should not invigilate she should not invigilate we should not invigilate you should not invigilate they should not invigilate	I should not be invigilating you should not be invigilating she should not be invigilating we should not be invigilating you should not be invigilating they should not be invigilating
Perfect	V-ing perfect
I should not have invigilated you should not have invigilated she should not have invigilated we should not have invigilated you should not have invigilated they should not have invigilated	I should not have been invigilating you should not have been invigilating she should not have been invigilating we should not have been invigilating you should not have been invigilating they should not have been invigilating

Interrogative form

Simple form	V-ing form
should I invigilate? should you invigilate? should she invigilate? should we invigilate? should you invigilate? should they invigilate?	should I be invigilating? should you be invigilating? should she be invigilating? should we be invigilating? should you be invigilating? should they be invigilating?
Perfect	V-ing perfect
should I have invigilated? should you have invigilated? should she have invigilated? should we have invigilated? should you have invigilated? should they have invigilated?	should I have been invigilating? should you have been invigilating? should she have been invigilating? should we have been invigilating? should you have been invigilating? should they have been invigilating?

Interro-negative form

Simple form	V-ing form
should I not invigilate? should you not invigilate? should she not invigilate? should we not invigilate? should you not invigilate? should they not invigilate?	should I not be invigilating? should you not be invigilating? should she not be invigilating? should we not be invigilating? should you not be invigilating? should they not be invigilating?
Perfect	V-ing perfect
should I not have invigilated? should you not have invigilated? should she not have invigilated? should we not have invigilated? should you not have invigilated? should they not have invigilated?	should I not have been invigilating? should you not have been invigilating? should she not have been invigilating? should we not have been invigilating? should you not have been invigilating? should they not have been invigilating?