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