English verb conjugation
MAY DRUB

Regular verb: drub - drubbed - drubbed

Affirmation

Simple form	V-ing form
I may drub you may drub he may drub we may drub you may drub they may drub	I may be drubbing you may be drubbing he may be drubbing we may be drubbing you may be drubbing they may be drubbing
Perfect	V-ing perfect
I may have drubbed you may have drubbed he may have drubbed we may have drubbed you may have drubbed they may have drubbed	I may have been drubbing you may have been drubbing he may have been drubbing we may have been drubbing you may have been drubbing they may have been drubbing

Negation

Simple form	V-ing form
I mayn't drub you mayn't drub he mayn't drub we mayn't drub you mayn't drub they mayn't drub	I mayn't be drubbing you mayn't be drubbing he mayn't be drubbing we mayn't be drubbing you mayn't be drubbing they mayn't be drubbing
Perfect	V-ing perfect
I mayn't have drubbed you mayn't have drubbed he mayn't have drubbed we mayn't have drubbed you mayn't have drubbed they mayn't have drubbed	I mayn't have been drubbing you mayn't have been drubbing he mayn't have been drubbing we mayn't have been drubbing you mayn't have been drubbing they mayn't have been drubbing

Interrogative form

Simple form	V-ing form
may I drub? may you drub? may he drub? may we drub? may you drub? may they drub?	may I be drubbing? may you be drubbing? may he be drubbing? may we be drubbing? may you be drubbing? may they be drubbing?
Perfect	V-ing perfect
may I have drubbed? may you have drubbed? may he have drubbed? may we have drubbed? may you have drubbed? may they have drubbed?	may I have been drubbing? may you have been drubbing? may he have been drubbing? may we have been drubbing? may you have been drubbing? may they have been drubbing?

Interro-negative form

Simple form	V-ing form
mayn't I drub? mayn't you drub? mayn't he drub? mayn't we drub? mayn't you drub? mayn't they drub?	mayn't I be drubbing? mayn't you be drubbing? mayn't he be drubbing? mayn't we be drubbing? mayn't you be drubbing? mayn't they be drubbing?
Perfect	V-ing perfect
mayn't I have drubbed? mayn't you have drubbed? mayn't he have drubbed? mayn't we have drubbed? mayn't you have drubbed? mayn't they have drubbed?	mayn't I have been drubbing? mayn't you have been drubbing? mayn't he have been drubbing? mayn't we have been drubbing? mayn't you have been drubbing? mayn't they have been drubbing?