I'll be weakening you'll be weakening she'll be weakening we'll be weakening you'll be weakening they'll be weakening
Perfect
I'll have weakened you'll have weakened she'll have weakened we'll have weakened you'll have weakened they'll have weakened
V-ing perfect
I'll have been weakening you'll have been weakening she'll have been weakening we'll have been weakening you'll have been weakening they'll have been weakening
Negation
Simple form
I shan't weaken you shan't weaken she shan't weaken we shan't weaken you shan't weaken they shan't weaken
V-ing form
I shan't be weakening you shan't be weakening she shan't be weakening we shan't be weakening you shan't be weakening they shan't be weakening
Perfect
I shan't have weakened you shan't have weakened she shan't have weakened we shan't have weakened you shan't have weakened they shan't have weakened
V-ing perfect
I shan't have been weakening you shan't have been weakening she shan't have been weakening we shan't have been weakening you shan't have been weakening they shan't have been weakening
Interrogative form
Simple form
shall I weaken? shall you weaken? shall she weaken? shall we weaken? shall you weaken? shall they weaken?
V-ing form
shall I be weakening? shall you be weakening? shall she be weakening? shall we be weakening? shall you be weakening? shall they be weakening?
Perfect
shall I have weakened? shall you have weakened? shall she have weakened? shall we have weakened? shall you have weakened? shall they have weakened?
V-ing perfect
shall I have been weakening? shall you have been weakening? shall she have been weakening? shall we have been weakening? shall you have been weakening? shall they have been weakening?
Interro-negative form
Simple form
shan't I weaken? shan't you weaken? shan't she weaken? shan't we weaken? shan't you weaken? shan't they weaken?
V-ing form
shan't I be weakening? shan't you be weakening? shan't she be weakening? shan't we be weakening? shan't you be weakening? shan't they be weakening?
Perfect
shan't I have weakened? shan't you have weakened? shan't she have weakened? shan't we have weakened? shan't you have weakened? shan't they have weakened?
V-ing perfect
shan't I have been weakening? shan't you have been weakening? shan't she have been weakening? shan't we have been weakening? shan't you have been weakening? shan't they have been weakening?