may preexist
Verbo regular: preexist - preexisted- preexisted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may preexist
you may preexist
he may preexist
we may preexist
you may preexist
they may preexist 	I may be preexisting
you may be preexisting
he may be preexisting
we may be preexisting
you may be preexisting
they may be preexisting	I may have preexisted
you may have preexisted
he may have preexisted
we may have preexisted
you may have preexisted
they may have preexisted	I may have been preexisting
you may have been preexisting
he may have been preexisting
we may have been preexisting
you may have been preexisting
they may have been preexisting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not preexist
you may not preexist
he may not preexist
we may not preexist
you may not preexist
they may not preexist 	I may not be preexisting
you may not be preexisting
he may not be preexisting
we may not be preexisting
you may not be preexisting
they may not be preexisting	I may not have preexisted
you may not have preexisted
he may not have preexisted
we may not have preexisted
you may not have preexisted
they may not have preexisted	I may not have been preexisting
you may not have been preexisting
he may not have been preexisting
we may not have been preexisting
you may not have been preexisting
they may not have been preexisting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I preexist?
may you preexist?
may he preexist?
may we preexist?
may you preexist?
may they preexist? 	may I be preexisting?
may you be preexisting?
may he be preexisting?
may we be preexisting?
may you be preexisting?
may they be preexisting? 	may I have preexisted?
may you have preexisted?
may he have preexisted?
may we have preexisted?
may you have preexisted?
may they have preexisted? 	may I have been preexisting?
may you have been preexisting?
may he have been preexisting?
may we have been preexisting?
may you have been preexisting?
may they have been preexisting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not preexist?
may you not preexist?
may he not preexist?
may we not preexist?
may you not preexist?
may they not preexist? 	may I not be preexisting?
may you not be preexisting?
may he not be preexisting?
may we not be preexisting?
may you not be preexisting?
may they not be preexisting? 	may I not have preexisted?
may you not have preexisted?
may he not have preexisted?
may we not have preexisted?
may you not have preexisted?
may they not have preexisted? 	may I not have been preexisting?
may you not have been preexisting?
may he not have been preexisting?
may we not have been preexisting?
may you not have been preexisting?
may they not have been preexisting?