English verb conjugation
MAY CONCERN

Regular verb: concern - concerned - concerned

Affirmation

Simple form	V-ing form
I may concern you may concern he may concern we may concern you may concern they may concern	I may be concerning you may be concerning he may be concerning we may be concerning you may be concerning they may be concerning
Perfect	V-ing perfect
I may have concerned you may have concerned he may have concerned we may have concerned you may have concerned they may have concerned	I may have been concerning you may have been concerning he may have been concerning we may have been concerning you may have been concerning they may have been concerning

Negation

Simple form	V-ing form
I mayn't concern you mayn't concern he mayn't concern we mayn't concern you mayn't concern they mayn't concern	I mayn't be concerning you mayn't be concerning he mayn't be concerning we mayn't be concerning you mayn't be concerning they mayn't be concerning
Perfect	V-ing perfect
I mayn't have concerned you mayn't have concerned he mayn't have concerned we mayn't have concerned you mayn't have concerned they mayn't have concerned	I mayn't have been concerning you mayn't have been concerning he mayn't have been concerning we mayn't have been concerning you mayn't have been concerning they mayn't have been concerning

Interrogative form

Simple form	V-ing form
may I concern? may you concern? may he concern? may we concern? may you concern? may they concern?	may I be concerning? may you be concerning? may he be concerning? may we be concerning? may you be concerning? may they be concerning?
Perfect	V-ing perfect
may I have concerned? may you have concerned? may he have concerned? may we have concerned? may you have concerned? may they have concerned?	may I have been concerning? may you have been concerning? may he have been concerning? may we have been concerning? may you have been concerning? may they have been concerning?

Interro-negative form

Simple form	V-ing form
mayn't I concern? mayn't you concern? mayn't he concern? mayn't we concern? mayn't you concern? mayn't they concern?	mayn't I be concerning? mayn't you be concerning? mayn't he be concerning? mayn't we be concerning? mayn't you be concerning? mayn't they be concerning?
Perfect	V-ing perfect
mayn't I have concerned? mayn't you have concerned? mayn't he have concerned? mayn't we have concerned? mayn't you have concerned? mayn't they have concerned?	mayn't I have been concerning? mayn't you have been concerning? mayn't he have been concerning? mayn't we have been concerning? mayn't you have been concerning? mayn't they have been concerning?