English verb conjugation
MAY TUB

Regular verb: tub - tubbed - tubbed

Affirmation

Simple form	V-ing form
I may tub you may tub he may tub we may tub you may tub they may tub	I may be tubbing you may be tubbing he may be tubbing we may be tubbing you may be tubbing they may be tubbing
Perfect	V-ing perfect
I may have tubbed you may have tubbed he may have tubbed we may have tubbed you may have tubbed they may have tubbed	I may have been tubbing you may have been tubbing he may have been tubbing we may have been tubbing you may have been tubbing they may have been tubbing

Negation

Simple form	V-ing form
I mayn't tub you mayn't tub he mayn't tub we mayn't tub you mayn't tub they mayn't tub	I mayn't be tubbing you mayn't be tubbing he mayn't be tubbing we mayn't be tubbing you mayn't be tubbing they mayn't be tubbing
Perfect	V-ing perfect
I mayn't have tubbed you mayn't have tubbed he mayn't have tubbed we mayn't have tubbed you mayn't have tubbed they mayn't have tubbed	I mayn't have been tubbing you mayn't have been tubbing he mayn't have been tubbing we mayn't have been tubbing you mayn't have been tubbing they mayn't have been tubbing

Interrogative form

Simple form	V-ing form
may I tub? may you tub? may he tub? may we tub? may you tub? may they tub?	may I be tubbing? may you be tubbing? may he be tubbing? may we be tubbing? may you be tubbing? may they be tubbing?
Perfect	V-ing perfect
may I have tubbed? may you have tubbed? may he have tubbed? may we have tubbed? may you have tubbed? may they have tubbed?	may I have been tubbing? may you have been tubbing? may he have been tubbing? may we have been tubbing? may you have been tubbing? may they have been tubbing?

Interro-negative form

Simple form	V-ing form
mayn't I tub? mayn't you tub? mayn't he tub? mayn't we tub? mayn't you tub? mayn't they tub?	mayn't I be tubbing? mayn't you be tubbing? mayn't he be tubbing? mayn't we be tubbing? mayn't you be tubbing? mayn't they be tubbing?
Perfect	V-ing perfect
mayn't I have tubbed? mayn't you have tubbed? mayn't he have tubbed? mayn't we have tubbed? mayn't you have tubbed? mayn't they have tubbed?	mayn't I have been tubbing? mayn't you have been tubbing? mayn't he have been tubbing? mayn't we have been tubbing? mayn't you have been tubbing? mayn't they have been tubbing?