may preface
Verbo regular: preface - prefaced- prefaced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may preface
you may preface
he may preface
we may preface
you may preface
they may preface 	I may be prefacing
you may be prefacing
he may be prefacing
we may be prefacing
you may be prefacing
they may be prefacing	I may have prefaced
you may have prefaced
he may have prefaced
we may have prefaced
you may have prefaced
they may have prefaced	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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mayn't preface
you mayn't preface
he mayn't preface
we mayn't preface
you mayn't preface
they mayn't preface 	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	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	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	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I preface?
may you preface?
may he preface?
may we preface?
may you preface?
may they preface? 	may I be prefacing?
may you be prefacing?
may he be prefacing?
may we be prefacing?
may you be prefacing?
may they be prefacing? 	may I have prefaced?
may you have prefaced?
may he have prefaced?
may we have prefaced?
may you have prefaced?
may they have prefaced? 	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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mayn't I preface?
mayn't you preface?
mayn't he preface?
mayn't we preface?
mayn't you preface?
mayn't they preface? 	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? 	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? 	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?