may prealter
Verbo regular: prealter - prealtered- prealtered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may prealter
you may prealter
she may prealter
we may prealter
you may prealter
they may prealter 	I may be prealtering
you may be prealtering
she may be prealtering
we may be prealtering
you may be prealtering
they may be prealtering	I may have prealtered
you may have prealtered
she may have prealtered
we may have prealtered
you may have prealtered
they may have prealtered	I may have been prealtering
you may have been prealtering
she may have been prealtering
we may have been prealtering
you may have been prealtering
they may have been prealtering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not prealter
you may not prealter
she may not prealter
we may not prealter
you may not prealter
they may not prealter 	I may not be prealtering
you may not be prealtering
she may not be prealtering
we may not be prealtering
you may not be prealtering
they may not be prealtering	I may not have prealtered
you may not have prealtered
she may not have prealtered
we may not have prealtered
you may not have prealtered
they may not have prealtered	I may not have been prealtering
you may not have been prealtering
she may not have been prealtering
we may not have been prealtering
you may not have been prealtering
they may not have been prealtering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I prealter?
may you prealter?
may she prealter?
may we prealter?
may you prealter?
may they prealter? 	may I be prealtering?
may you be prealtering?
may she be prealtering?
may we be prealtering?
may you be prealtering?
may they be prealtering? 	may I have prealtered?
may you have prealtered?
may she have prealtered?
may we have prealtered?
may you have prealtered?
may they have prealtered? 	may I have been prealtering?
may you have been prealtering?
may she have been prealtering?
may we have been prealtering?
may you have been prealtering?
may they have been prealtering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not prealter?
may you not prealter?
may she not prealter?
may we not prealter?
may you not prealter?
may they not prealter? 	may I not be prealtering?
may you not be prealtering?
may she not be prealtering?
may we not be prealtering?
may you not be prealtering?
may they not be prealtering? 	may I not have prealtered?
may you not have prealtered?
may she not have prealtered?
may we not have prealtered?
may you not have prealtered?
may they not have prealtered? 	may I not have been prealtering?
may you not have been prealtering?
may she not have been prealtering?
may we not have been prealtering?
may you not have been prealtering?
may they not have been prealtering?