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