English verb conjugation
SHALL ERR

Regular verb: err - erred - erred

Affirmation

Simple form	V-ing form
I'll err you'll err he'll err we'll err you'll err they'll err	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	V-ing 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	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	V-ing 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	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	V-ing 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	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	V-ing form
shall I err? shall you err? shall he err? shall we err? shall you err? shall they err?	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	V-ing 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?	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	V-ing 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?	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	V-ing 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?	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?