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