English verb conjugation
MAY STUB

Regular verb: stub - stubbed - stubbed

Affirmation

Simple form	V-ing form
I may stub you may stub he may stub we may stub you may stub they may stub	I may be stubbing you may be stubbing he may be stubbing we may be stubbing you may be stubbing they may be stubbing
Perfect	V-ing perfect
I may have stubbed you may have stubbed he may have stubbed we may have stubbed you may have stubbed they may have stubbed	I may have been stubbing you may have been stubbing he may have been stubbing we may have been stubbing you may have been stubbing they may have been stubbing

Negation

Simple form	V-ing form
I mayn't stub you mayn't stub he mayn't stub we mayn't stub you mayn't stub they mayn't stub	I mayn't be stubbing you mayn't be stubbing he mayn't be stubbing we mayn't be stubbing you mayn't be stubbing they mayn't be stubbing
Perfect	V-ing perfect
I mayn't have stubbed you mayn't have stubbed he mayn't have stubbed we mayn't have stubbed you mayn't have stubbed they mayn't have stubbed	I mayn't have been stubbing you mayn't have been stubbing he mayn't have been stubbing we mayn't have been stubbing you mayn't have been stubbing they mayn't have been stubbing

Interrogative form

Simple form	V-ing form
may I stub? may you stub? may he stub? may we stub? may you stub? may they stub?	may I be stubbing? may you be stubbing? may he be stubbing? may we be stubbing? may you be stubbing? may they be stubbing?
Perfect	V-ing perfect
may I have stubbed? may you have stubbed? may he have stubbed? may we have stubbed? may you have stubbed? may they have stubbed?	may I have been stubbing? may you have been stubbing? may he have been stubbing? may we have been stubbing? may you have been stubbing? may they have been stubbing?

Interro-negative form

Simple form	V-ing form
mayn't I stub? mayn't you stub? mayn't he stub? mayn't we stub? mayn't you stub? mayn't they stub?	mayn't I be stubbing? mayn't you be stubbing? mayn't he be stubbing? mayn't we be stubbing? mayn't you be stubbing? mayn't they be stubbing?
Perfect	V-ing perfect
mayn't I have stubbed? mayn't you have stubbed? mayn't he have stubbed? mayn't we have stubbed? mayn't you have stubbed? mayn't they have stubbed?	mayn't I have been stubbing? mayn't you have been stubbing? mayn't he have been stubbing? mayn't we have been stubbing? mayn't you have been stubbing? mayn't they have been stubbing?