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