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