English verb conjugation
MAY RETROGRESS

Regular verb: retrogress - retrogressed - retrogressed

Affirmation

Simple form	V-ing form
I may retrogress you may retrogress he may retrogress we may retrogress you may retrogress they may retrogress	I may be retrogressing you may be retrogressing he may be retrogressing we may be retrogressing you may be retrogressing they may be retrogressing
Perfect	V-ing perfect
I may have retrogressed you may have retrogressed he may have retrogressed we may have retrogressed you may have retrogressed they may have retrogressed	I may have been retrogressing you may have been retrogressing he may have been retrogressing we may have been retrogressing you may have been retrogressing they may have been retrogressing

Negation

Simple form	V-ing form
I mayn't retrogress you mayn't retrogress he mayn't retrogress we mayn't retrogress you mayn't retrogress they mayn't retrogress	I mayn't be retrogressing you mayn't be retrogressing he mayn't be retrogressing we mayn't be retrogressing you mayn't be retrogressing they mayn't be retrogressing
Perfect	V-ing perfect
I mayn't have retrogressed you mayn't have retrogressed he mayn't have retrogressed we mayn't have retrogressed you mayn't have retrogressed they mayn't have retrogressed	I mayn't have been retrogressing you mayn't have been retrogressing he mayn't have been retrogressing we mayn't have been retrogressing you mayn't have been retrogressing they mayn't have been retrogressing

Interrogative form

Simple form	V-ing form
may I retrogress? may you retrogress? may he retrogress? may we retrogress? may you retrogress? may they retrogress?	may I be retrogressing? may you be retrogressing? may he be retrogressing? may we be retrogressing? may you be retrogressing? may they be retrogressing?
Perfect	V-ing perfect
may I have retrogressed? may you have retrogressed? may he have retrogressed? may we have retrogressed? may you have retrogressed? may they have retrogressed?	may I have been retrogressing? may you have been retrogressing? may he have been retrogressing? may we have been retrogressing? may you have been retrogressing? may they have been retrogressing?

Interro-negative form

Simple form	V-ing form
mayn't I retrogress? mayn't you retrogress? mayn't he retrogress? mayn't we retrogress? mayn't you retrogress? mayn't they retrogress?	mayn't I be retrogressing? mayn't you be retrogressing? mayn't he be retrogressing? mayn't we be retrogressing? mayn't you be retrogressing? mayn't they be retrogressing?
Perfect	V-ing perfect
mayn't I have retrogressed? mayn't you have retrogressed? mayn't he have retrogressed? mayn't we have retrogressed? mayn't you have retrogressed? mayn't they have retrogressed?	mayn't I have been retrogressing? mayn't you have been retrogressing? mayn't he have been retrogressing? mayn't we have been retrogressing? mayn't you have been retrogressing? mayn't they have been retrogressing?