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