I may bumble you may bumble she may bumble we may bumble you may bumble they may bumble
V-ing form
I may be bumbling you may be bumbling she may be bumbling we may be bumbling you may be bumbling they may be bumbling
Perfect
I may have bumbled you may have bumbled she may have bumbled we may have bumbled you may have bumbled they may have bumbled
V-ing perfect
I may have been bumbling you may have been bumbling she may have been bumbling we may have been bumbling you may have been bumbling they may have been bumbling
Negation
Simple form
I mayn't bumble you mayn't bumble she mayn't bumble we mayn't bumble you mayn't bumble they mayn't bumble
V-ing form
I mayn't be bumbling you mayn't be bumbling she mayn't be bumbling we mayn't be bumbling you mayn't be bumbling they mayn't be bumbling
Perfect
I mayn't have bumbled you mayn't have bumbled she mayn't have bumbled we mayn't have bumbled you mayn't have bumbled they mayn't have bumbled
V-ing perfect
I mayn't have been bumbling you mayn't have been bumbling she mayn't have been bumbling we mayn't have been bumbling you mayn't have been bumbling they mayn't have been bumbling
Interrogative form
Simple form
may I bumble? may you bumble? may she bumble? may we bumble? may you bumble? may they bumble?
V-ing form
may I be bumbling? may you be bumbling? may she be bumbling? may we be bumbling? may you be bumbling? may they be bumbling?
Perfect
may I have bumbled? may you have bumbled? may she have bumbled? may we have bumbled? may you have bumbled? may they have bumbled?
V-ing perfect
may I have been bumbling? may you have been bumbling? may she have been bumbling? may we have been bumbling? may you have been bumbling? may they have been bumbling?
Interro-negative form
Simple form
mayn't I bumble? mayn't you bumble? mayn't she bumble? mayn't we bumble? mayn't you bumble? mayn't they bumble?
V-ing form
mayn't I be bumbling? mayn't you be bumbling? mayn't she be bumbling? mayn't we be bumbling? mayn't you be bumbling? mayn't they be bumbling?
Perfect
mayn't I have bumbled? mayn't you have bumbled? mayn't she have bumbled? mayn't we have bumbled? mayn't you have bumbled? mayn't they have bumbled?
V-ing perfect
mayn't I have been bumbling? mayn't you have been bumbling? mayn't she have been bumbling? mayn't we have been bumbling? mayn't you have been bumbling? mayn't they have been bumbling?