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