I may preface you may preface he may preface we may preface you may preface they may preface
Forme en V-ing
I may be prefacing you may be prefacing he may be prefacing we may be prefacing you may be prefacing they may be prefacing
Perfect
I may have prefaced you may have prefaced he may have prefaced we may have prefaced you may have prefaced they may have prefaced
Perfect en V-ing
I may have been prefacing you may have been prefacing he may have been prefacing we may have been prefacing you may have been prefacing they may have been prefacing
Négation
Forme simple
I mayn't preface you mayn't preface he mayn't preface we mayn't preface you mayn't preface they mayn't preface
Forme en V-ing
I mayn't be prefacing you mayn't be prefacing he mayn't be prefacing we mayn't be prefacing you mayn't be prefacing they mayn't be prefacing
Perfect
I mayn't have prefaced you mayn't have prefaced he mayn't have prefaced we mayn't have prefaced you mayn't have prefaced they mayn't have prefaced
Perfect en V-ing
I mayn't have been prefacing you mayn't have been prefacing he mayn't have been prefacing we mayn't have been prefacing you mayn't have been prefacing they mayn't have been prefacing
Forme interrogative
Forme simple
may I preface? may you preface? may he preface? may we preface? may you preface? may they preface?
Forme en V-ing
may I be prefacing? may you be prefacing? may he be prefacing? may we be prefacing? may you be prefacing? may they be prefacing?
Perfect
may I have prefaced? may you have prefaced? may he have prefaced? may we have prefaced? may you have prefaced? may they have prefaced?
Perfect en V-ing
may I have been prefacing? may you have been prefacing? may he have been prefacing? may we have been prefacing? may you have been prefacing? may they have been prefacing?
Forme interro-négative
Forme simple
mayn't I preface? mayn't you preface? mayn't he preface? mayn't we preface? mayn't you preface? mayn't they preface?
Forme en V-ing
mayn't I be prefacing? mayn't you be prefacing? mayn't he be prefacing? mayn't we be prefacing? mayn't you be prefacing? mayn't they be prefacing?
Perfect
mayn't I have prefaced? mayn't you have prefaced? mayn't he have prefaced? mayn't we have prefaced? mayn't you have prefaced? mayn't they have prefaced?
Perfect en V-ing
mayn't I have been prefacing? mayn't you have been prefacing? mayn't he have been prefacing? mayn't we have been prefacing? mayn't you have been prefacing? mayn't they have been prefacing?