I may customize you may customize he may customize we may customize you may customize they may customize
V-ing form
I may be customizing you may be customizing he may be customizing we may be customizing you may be customizing they may be customizing
Perfect
I may have customized you may have customized he may have customized we may have customized you may have customized they may have customized
V-ing perfect
I may have been customizing you may have been customizing he may have been customizing we may have been customizing you may have been customizing they may have been customizing
Negation
Simple form
I mayn't customize you mayn't customize he mayn't customize we mayn't customize you mayn't customize they mayn't customize
V-ing form
I mayn't be customizing you mayn't be customizing he mayn't be customizing we mayn't be customizing you mayn't be customizing they mayn't be customizing
Perfect
I mayn't have customized you mayn't have customized he mayn't have customized we mayn't have customized you mayn't have customized they mayn't have customized
V-ing perfect
I mayn't have been customizing you mayn't have been customizing he mayn't have been customizing we mayn't have been customizing you mayn't have been customizing they mayn't have been customizing
Interrogative form
Simple form
may I customize? may you customize? may he customize? may we customize? may you customize? may they customize?
V-ing form
may I be customizing? may you be customizing? may he be customizing? may we be customizing? may you be customizing? may they be customizing?
Perfect
may I have customized? may you have customized? may he have customized? may we have customized? may you have customized? may they have customized?
V-ing perfect
may I have been customizing? may you have been customizing? may he have been customizing? may we have been customizing? may you have been customizing? may they have been customizing?
Interro-negative form
Simple form
mayn't I customize? mayn't you customize? mayn't he customize? mayn't we customize? mayn't you customize? mayn't they customize?
V-ing form
mayn't I be customizing? mayn't you be customizing? mayn't he be customizing? mayn't we be customizing? mayn't you be customizing? mayn't they be customizing?
Perfect
mayn't I have customized? mayn't you have customized? mayn't he have customized? mayn't we have customized? mayn't you have customized? mayn't they have customized?
V-ing perfect
mayn't I have been customizing? mayn't you have been customizing? mayn't he have been customizing? mayn't we have been customizing? mayn't you have been customizing? mayn't they have been customizing?