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