English verb conjugation
SHOULD SMOOTH

Regular verb: smooth - smoothed - smoothed

Affirmation

Simple form	V-ing form
I should smooth you should smooth he should smooth we should smooth you should smooth they should smooth	I should be smoothing you should be smoothing he should be smoothing we should be smoothing you should be smoothing they should be smoothing
Perfect	V-ing perfect
I should have smoothed you should have smoothed he should have smoothed we should have smoothed you should have smoothed they should have smoothed	I should have been smoothing you should have been smoothing he should have been smoothing we should have been smoothing you should have been smoothing they should have been smoothing

Negation

Simple form	V-ing form
I should not smooth you should not smooth he should not smooth we should not smooth you should not smooth they should not smooth	I should not be smoothing you should not be smoothing he should not be smoothing we should not be smoothing you should not be smoothing they should not be smoothing
Perfect	V-ing perfect
I should not have smoothed you should not have smoothed he should not have smoothed we should not have smoothed you should not have smoothed they should not have smoothed	I should not have been smoothing you should not have been smoothing he should not have been smoothing we should not have been smoothing you should not have been smoothing they should not have been smoothing

Interrogative form

Simple form	V-ing form
should I smooth? should you smooth? should he smooth? should we smooth? should you smooth? should they smooth?	should I be smoothing? should you be smoothing? should he be smoothing? should we be smoothing? should you be smoothing? should they be smoothing?
Perfect	V-ing perfect
should I have smoothed? should you have smoothed? should he have smoothed? should we have smoothed? should you have smoothed? should they have smoothed?	should I have been smoothing? should you have been smoothing? should he have been smoothing? should we have been smoothing? should you have been smoothing? should they have been smoothing?

Interro-negative form

Simple form	V-ing form
should I not smooth? should you not smooth? should he not smooth? should we not smooth? should you not smooth? should they not smooth?	should I not be smoothing? should you not be smoothing? should he not be smoothing? should we not be smoothing? should you not be smoothing? should they not be smoothing?
Perfect	V-ing perfect
should I not have smoothed? should you not have smoothed? should he not have smoothed? should we not have smoothed? should you not have smoothed? should they not have smoothed?	should I not have been smoothing? should you not have been smoothing? should he not have been smoothing? should we not have been smoothing? should you not have been smoothing? should they not have been smoothing?