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