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