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