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