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