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