
Regular verb: down - downed - downed
Simple form | V-ing form | 
| I may down you may down she may down we may down you may down they may down  | I may be downing you may be downing she may be downing we may be downing you may be downing they may be downing  | 
Perfect | V-ing perfect | 
| I may have downed you may have downed she may have downed we may have downed you may have downed they may have downed  | I may have been downing you may have been downing she may have been downing we may have been downing you may have been downing they may have been downing  | 
Simple form | V-ing form | 
| I mayn't down you mayn't down she mayn't down we mayn't down you mayn't down they mayn't down  | I mayn't be downing you mayn't be downing she mayn't be downing we mayn't be downing you mayn't be downing they mayn't be downing  | 
Perfect | V-ing perfect | 
| I mayn't have downed you mayn't have downed she mayn't have downed we mayn't have downed you mayn't have downed they mayn't have downed  | I mayn't have been downing you mayn't have been downing she mayn't have been downing we mayn't have been downing you mayn't have been downing they mayn't have been downing  | 
Simple form | V-ing form | 
| may I down? may you down? may she down? may we down? may you down? may they down?  | may I be downing? may you be downing? may she be downing? may we be downing? may you be downing? may they be downing?  | 
Perfect | V-ing perfect | 
| may I have downed? may you have downed? may she have downed? may we have downed? may you have downed? may they have downed?  | may I have been downing? may you have been downing? may she have been downing? may we have been downing? may you have been downing? may they have been downing?  | 
Simple form | V-ing form | 
| mayn't I down? mayn't you down? mayn't she down? mayn't we down? mayn't you down? mayn't they down?  | mayn't I be downing? mayn't you be downing? mayn't she be downing? mayn't we be downing? mayn't you be downing? mayn't they be downing?  | 
Perfect | V-ing perfect | 
| mayn't I have downed? mayn't you have downed? mayn't she have downed? mayn't we have downed? mayn't you have downed? mayn't they have downed?  | mayn't I have been downing? mayn't you have been downing? mayn't she have been downing? mayn't we have been downing? mayn't you have been downing? mayn't they have been downing?  |