I should snuff you should snuff he should snuff we should snuff you should snuff they should snuff
V-ing form
I should be snuffing you should be snuffing he should be snuffing we should be snuffing you should be snuffing they should be snuffing
Perfect
I should have snuffed you should have snuffed he should have snuffed we should have snuffed you should have snuffed they should have snuffed
V-ing perfect
I should have been snuffing you should have been snuffing he should have been snuffing we should have been snuffing you should have been snuffing they should have been snuffing
Negation
Simple form
I should not snuff you should not snuff he should not snuff we should not snuff you should not snuff they should not snuff
V-ing form
I should not be snuffing you should not be snuffing he should not be snuffing we should not be snuffing you should not be snuffing they should not be snuffing
Perfect
I should not have snuffed you should not have snuffed he should not have snuffed we should not have snuffed you should not have snuffed they should not have snuffed
V-ing perfect
I should not have been snuffing you should not have been snuffing he should not have been snuffing we should not have been snuffing you should not have been snuffing they should not have been snuffing
Interrogative form
Simple form
should I snuff? should you snuff? should he snuff? should we snuff? should you snuff? should they snuff?
V-ing form
should I be snuffing? should you be snuffing? should he be snuffing? should we be snuffing? should you be snuffing? should they be snuffing?
Perfect
should I have snuffed? should you have snuffed? should he have snuffed? should we have snuffed? should you have snuffed? should they have snuffed?
V-ing perfect
should I have been snuffing? should you have been snuffing? should he have been snuffing? should we have been snuffing? should you have been snuffing? should they have been snuffing?
Interro-negative form
Simple form
should I not snuff? should you not snuff? should he not snuff? should we not snuff? should you not snuff? should they not snuff?
V-ing form
should I not be snuffing? should you not be snuffing? should he not be snuffing? should we not be snuffing? should you not be snuffing? should they not be snuffing?
Perfect
should I not have snuffed? should you not have snuffed? should he not have snuffed? should we not have snuffed? should you not have snuffed? should they not have snuffed?
V-ing perfect
should I not have been snuffing? should you not have been snuffing? should he not have been snuffing? should we not have been snuffing? should you not have been snuffing? should they not have been snuffing?