I'll be backchecking you'll be backchecking she'll be backchecking we'll be backchecking you'll be backchecking they'll be backchecking
Perfect
I'll have backchecked you'll have backchecked she'll have backchecked we'll have backchecked you'll have backchecked they'll have backchecked
V-ing perfect
I'll have been backchecking you'll have been backchecking she'll have been backchecking we'll have been backchecking you'll have been backchecking they'll have been backchecking
Negation
Simple form
I shan't backcheck you shan't backcheck she shan't backcheck we shan't backcheck you shan't backcheck they shan't backcheck
V-ing form
I shan't be backchecking you shan't be backchecking she shan't be backchecking we shan't be backchecking you shan't be backchecking they shan't be backchecking
Perfect
I shan't have backchecked you shan't have backchecked she shan't have backchecked we shan't have backchecked you shan't have backchecked they shan't have backchecked
V-ing perfect
I shan't have been backchecking you shan't have been backchecking she shan't have been backchecking we shan't have been backchecking you shan't have been backchecking they shan't have been backchecking
Interrogative form
Simple form
shall I backcheck? shall you backcheck? shall she backcheck? shall we backcheck? shall you backcheck? shall they backcheck?
V-ing form
shall I be backchecking? shall you be backchecking? shall she be backchecking? shall we be backchecking? shall you be backchecking? shall they be backchecking?
Perfect
shall I have backchecked? shall you have backchecked? shall she have backchecked? shall we have backchecked? shall you have backchecked? shall they have backchecked?
V-ing perfect
shall I have been backchecking? shall you have been backchecking? shall she have been backchecking? shall we have been backchecking? shall you have been backchecking? shall they have been backchecking?
Interro-negative form
Simple form
shan't I backcheck? shan't you backcheck? shan't she backcheck? shan't we backcheck? shan't you backcheck? shan't they backcheck?
V-ing form
shan't I be backchecking? shan't you be backchecking? shan't she be backchecking? shan't we be backchecking? shan't you be backchecking? shan't they be backchecking?
Perfect
shan't I have backchecked? shan't you have backchecked? shan't she have backchecked? shan't we have backchecked? shan't you have backchecked? shan't they have backchecked?
V-ing perfect
shan't I have been backchecking? shan't you have been backchecking? shan't she have been backchecking? shan't we have been backchecking? shan't you have been backchecking? shan't they have been backchecking?