English verb conjugation
MAY PREALTER

Regular verb: prealter - prealtered - prealtered

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
I mayn't prealter you mayn't prealter she mayn't prealter we mayn't prealter you mayn't prealter they mayn't prealter	I mayn't be prealtering you mayn't be prealtering she mayn't be prealtering we mayn't be prealtering you mayn't be prealtering they mayn't be prealtering
Perfect	V-ing perfect
I mayn't have prealtered you mayn't have prealtered she mayn't have prealtered we mayn't have prealtered you mayn't have prealtered they mayn't have prealtered	I mayn't have been prealtering you mayn't have been prealtering she mayn't have been prealtering we mayn't have been prealtering you mayn't have been prealtering they mayn't have been prealtering

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
mayn't I prealter? mayn't you prealter? mayn't she prealter? mayn't we prealter? mayn't you prealter? mayn't they prealter?	mayn't I be prealtering? mayn't you be prealtering? mayn't she be prealtering? mayn't we be prealtering? mayn't you be prealtering? mayn't they be prealtering?
Perfect	V-ing perfect
mayn't I have prealtered? mayn't you have prealtered? mayn't she have prealtered? mayn't we have prealtered? mayn't you have prealtered? mayn't they have prealtered?	mayn't I have been prealtering? mayn't you have been prealtering? mayn't she have been prealtering? mayn't we have been prealtering? mayn't you have been prealtering? mayn't they have been prealtering?