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