I'll be snuffing you'll be snuffing he'll be snuffing we'll be snuffing you'll be snuffing they'll be snuffing
Perfect
I'll have snuffed you'll have snuffed he'll have snuffed we'll have snuffed you'll have snuffed they'll have snuffed
V-ing perfect
I'll have been snuffing you'll have been snuffing he'll have been snuffing we'll have been snuffing you'll have been snuffing they'll have been snuffing
Negation
Simple form
I shan't snuff you shan't snuff he shan't snuff we shan't snuff you shan't snuff they shan't snuff
V-ing form
I shan't be snuffing you shan't be snuffing he shan't be snuffing we shan't be snuffing you shan't be snuffing they shan't be snuffing
Perfect
I shan't have snuffed you shan't have snuffed he shan't have snuffed we shan't have snuffed you shan't have snuffed they shan't have snuffed
V-ing perfect
I shan't have been snuffing you shan't have been snuffing he shan't have been snuffing we shan't have been snuffing you shan't have been snuffing they shan't have been snuffing
Interrogative form
Simple form
shall I snuff? shall you snuff? shall he snuff? shall we snuff? shall you snuff? shall they snuff?
V-ing form
shall I be snuffing? shall you be snuffing? shall he be snuffing? shall we be snuffing? shall you be snuffing? shall they be snuffing?
Perfect
shall I have snuffed? shall you have snuffed? shall he have snuffed? shall we have snuffed? shall you have snuffed? shall they have snuffed?
V-ing perfect
shall I have been snuffing? shall you have been snuffing? shall he have been snuffing? shall we have been snuffing? shall you have been snuffing? shall they have been snuffing?
Interro-negative form
Simple form
shan't I snuff? shan't you snuff? shan't he snuff? shan't we snuff? shan't you snuff? shan't they snuff?
V-ing form
shan't I be snuffing? shan't you be snuffing? shan't he be snuffing? shan't we be snuffing? shan't you be snuffing? shan't they be snuffing?
Perfect
shan't I have snuffed? shan't you have snuffed? shan't he have snuffed? shan't we have snuffed? shan't you have snuffed? shan't they have snuffed?
V-ing perfect
shan't I have been snuffing? shan't you have been snuffing? shan't he have been snuffing? shan't we have been snuffing? shan't you have been snuffing? shan't they have been snuffing?