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