I may scrub you may scrub he may scrub we may scrub you may scrub they may scrub
V-ing form
I may be scrubbing you may be scrubbing he may be scrubbing we may be scrubbing you may be scrubbing they may be scrubbing
Perfect
I may have scrubbed you may have scrubbed he may have scrubbed we may have scrubbed you may have scrubbed they may have scrubbed
V-ing perfect
I may have been scrubbing you may have been scrubbing he may have been scrubbing we may have been scrubbing you may have been scrubbing they may have been scrubbing
Negation
Simple form
I mayn't scrub you mayn't scrub he mayn't scrub we mayn't scrub you mayn't scrub they mayn't scrub
V-ing form
I mayn't be scrubbing you mayn't be scrubbing he mayn't be scrubbing we mayn't be scrubbing you mayn't be scrubbing they mayn't be scrubbing
Perfect
I mayn't have scrubbed you mayn't have scrubbed he mayn't have scrubbed we mayn't have scrubbed you mayn't have scrubbed they mayn't have scrubbed
V-ing perfect
I mayn't have been scrubbing you mayn't have been scrubbing he mayn't have been scrubbing we mayn't have been scrubbing you mayn't have been scrubbing they mayn't have been scrubbing
Interrogative form
Simple form
may I scrub? may you scrub? may he scrub? may we scrub? may you scrub? may they scrub?
V-ing form
may I be scrubbing? may you be scrubbing? may he be scrubbing? may we be scrubbing? may you be scrubbing? may they be scrubbing?
Perfect
may I have scrubbed? may you have scrubbed? may he have scrubbed? may we have scrubbed? may you have scrubbed? may they have scrubbed?
V-ing perfect
may I have been scrubbing? may you have been scrubbing? may he have been scrubbing? may we have been scrubbing? may you have been scrubbing? may they have been scrubbing?
Interro-negative form
Simple form
mayn't I scrub? mayn't you scrub? mayn't he scrub? mayn't we scrub? mayn't you scrub? mayn't they scrub?
V-ing form
mayn't I be scrubbing? mayn't you be scrubbing? mayn't he be scrubbing? mayn't we be scrubbing? mayn't you be scrubbing? mayn't they be scrubbing?
Perfect
mayn't I have scrubbed? mayn't you have scrubbed? mayn't he have scrubbed? mayn't we have scrubbed? mayn't you have scrubbed? mayn't they have scrubbed?
V-ing perfect
mayn't I have been scrubbing? mayn't you have been scrubbing? mayn't he have been scrubbing? mayn't we have been scrubbing? mayn't you have been scrubbing? mayn't they have been scrubbing?