I may presuppose you may presuppose he may presuppose we may presuppose you may presuppose they may presuppose
V-ing form
I may be presupposing you may be presupposing he may be presupposing we may be presupposing you may be presupposing they may be presupposing
Perfect
I may have presupposed you may have presupposed he may have presupposed we may have presupposed you may have presupposed they may have presupposed
V-ing perfect
I may have been presupposing you may have been presupposing he may have been presupposing we may have been presupposing you may have been presupposing they may have been presupposing
Negation
Simple form
I mayn't presuppose you mayn't presuppose he mayn't presuppose we mayn't presuppose you mayn't presuppose they mayn't presuppose
V-ing form
I mayn't be presupposing you mayn't be presupposing he mayn't be presupposing we mayn't be presupposing you mayn't be presupposing they mayn't be presupposing
Perfect
I mayn't have presupposed you mayn't have presupposed he mayn't have presupposed we mayn't have presupposed you mayn't have presupposed they mayn't have presupposed
V-ing perfect
I mayn't have been presupposing you mayn't have been presupposing he mayn't have been presupposing we mayn't have been presupposing you mayn't have been presupposing they mayn't have been presupposing
Interrogative form
Simple form
may I presuppose? may you presuppose? may he presuppose? may we presuppose? may you presuppose? may they presuppose?
V-ing form
may I be presupposing? may you be presupposing? may he be presupposing? may we be presupposing? may you be presupposing? may they be presupposing?
Perfect
may I have presupposed? may you have presupposed? may he have presupposed? may we have presupposed? may you have presupposed? may they have presupposed?
V-ing perfect
may I have been presupposing? may you have been presupposing? may he have been presupposing? may we have been presupposing? may you have been presupposing? may they have been presupposing?
Interro-negative form
Simple form
mayn't I presuppose? mayn't you presuppose? mayn't he presuppose? mayn't we presuppose? mayn't you presuppose? mayn't they presuppose?
V-ing form
mayn't I be presupposing? mayn't you be presupposing? mayn't he be presupposing? mayn't we be presupposing? mayn't you be presupposing? mayn't they be presupposing?
Perfect
mayn't I have presupposed? mayn't you have presupposed? mayn't he have presupposed? mayn't we have presupposed? mayn't you have presupposed? mayn't they have presupposed?
V-ing perfect
mayn't I have been presupposing? mayn't you have been presupposing? mayn't he have been presupposing? mayn't we have been presupposing? mayn't you have been presupposing? mayn't they have been presupposing?