I shall weaken you shall weaken he shall weaken we shall weaken you shall weaken they shall weaken
V-ing form
I shall be weakening you shall be weakening he shall be weakening we shall be weakening you shall be weakening they shall be weakening
Perfect
I shall have weakened you shall have weakened he shall have weakened we shall have weakened you shall have weakened they shall have weakened
V-ing perfect
I shall have been weakening you shall have been weakening he shall have been weakening we shall have been weakening you shall have been weakening they shall have been weakening
Negation
Simple form
I shall not weaken you shall not weaken he shall not weaken we shall not weaken you shall not weaken they shall not weaken
V-ing form
I shall not be weakening you shall not be weakening he shall not be weakening we shall not be weakening you shall not be weakening they shall not be weakening
Perfect
I shall not have weakened you shall not have weakened he shall not have weakened we shall not have weakened you shall not have weakened they shall not have weakened
V-ing perfect
I shall not have been weakening you shall not have been weakening he shall not have been weakening we shall not have been weakening you shall not have been weakening they shall not have been weakening
Interrogative form
Simple form
shall I weaken? shall you weaken? shall he weaken? shall we weaken? shall you weaken? shall they weaken?
V-ing form
shall I be weakening? shall you be weakening? shall he be weakening? shall we be weakening? shall you be weakening? shall they be weakening?
Perfect
shall I have weakened? shall you have weakened? shall he 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 he have been weakening? shall we have been weakening? shall you have been weakening? shall they have been weakening?
Interro-negative form
Simple form
shall I not weaken? shall you not weaken? shall he not weaken? shall we not weaken? shall you not weaken? shall they not weaken?
V-ing form
shall I not be weakening? shall you not be weakening? shall he not be weakening? shall we not be weakening? shall you not be weakening? shall they not be weakening?
Perfect
shall I not have weakened? shall you not have weakened? shall he not have weakened? shall we not have weakened? shall you not have weakened? shall they not have weakened?
V-ing perfect
shall I not have been weakening? shall you not have been weakening? shall he not have been weakening? shall we not have been weakening? shall you not have been weakening? shall they not have been weakening?