may tub
Regular verb: tub - tubbed- tubbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?