English verb conjugation
MAY INVEST

Regular verb: invest - invested - invested

Affirmation

Simple form	V-ing form
I may invest you may invest he may invest we may invest you may invest they may invest	I may be investing you may be investing he may be investing we may be investing you may be investing they may be investing
Perfect	V-ing perfect
I may have invested you may have invested he may have invested we may have invested you may have invested they may have invested	I may have been investing you may have been investing he may have been investing we may have been investing you may have been investing they may have been investing

Negation

Simple form	V-ing form
I mayn't invest you mayn't invest he mayn't invest we mayn't invest you mayn't invest they mayn't invest	I mayn't be investing you mayn't be investing he mayn't be investing we mayn't be investing you mayn't be investing they mayn't be investing
Perfect	V-ing perfect
I mayn't have invested you mayn't have invested he mayn't have invested we mayn't have invested you mayn't have invested they mayn't have invested	I mayn't have been investing you mayn't have been investing he mayn't have been investing we mayn't have been investing you mayn't have been investing they mayn't have been investing

Interrogative form

Simple form	V-ing form
may I invest? may you invest? may he invest? may we invest? may you invest? may they invest?	may I be investing? may you be investing? may he be investing? may we be investing? may you be investing? may they be investing?
Perfect	V-ing perfect
may I have invested? may you have invested? may he have invested? may we have invested? may you have invested? may they have invested?	may I have been investing? may you have been investing? may he have been investing? may we have been investing? may you have been investing? may they have been investing?

Interro-negative form

Simple form	V-ing form
mayn't I invest? mayn't you invest? mayn't he invest? mayn't we invest? mayn't you invest? mayn't they invest?	mayn't I be investing? mayn't you be investing? mayn't he be investing? mayn't we be investing? mayn't you be investing? mayn't they be investing?
Perfect	V-ing perfect
mayn't I have invested? mayn't you have invested? mayn't he have invested? mayn't we have invested? mayn't you have invested? mayn't they have invested?	mayn't I have been investing? mayn't you have been investing? mayn't he have been investing? mayn't we have been investing? mayn't you have been investing? mayn't they have been investing?