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