
Regular verb: slow - slowed - slowed
Simple form | V-ing form | 
| I may slow you may slow he may slow we may slow you may slow they may slow  | I may be slowing you may be slowing he may be slowing we may be slowing you may be slowing they may be slowing  | 
Perfect | V-ing perfect | 
| I may have slowed you may have slowed he may have slowed we may have slowed you may have slowed they may have slowed  | I may have been slowing you may have been slowing he may have been slowing we may have been slowing you may have been slowing they may have been slowing  | 
Simple form | V-ing form | 
| I mayn't slow you mayn't slow he mayn't slow we mayn't slow you mayn't slow they mayn't slow  | I mayn't be slowing you mayn't be slowing he mayn't be slowing we mayn't be slowing you mayn't be slowing they mayn't be slowing  | 
Perfect | V-ing perfect | 
| I mayn't have slowed you mayn't have slowed he mayn't have slowed we mayn't have slowed you mayn't have slowed they mayn't have slowed  | I mayn't have been slowing you mayn't have been slowing he mayn't have been slowing we mayn't have been slowing you mayn't have been slowing they mayn't have been slowing  | 
Simple form | V-ing form | 
| may I slow? may you slow? may he slow? may we slow? may you slow? may they slow?  | may I be slowing? may you be slowing? may he be slowing? may we be slowing? may you be slowing? may they be slowing?  | 
Perfect | V-ing perfect | 
| may I have slowed? may you have slowed? may he have slowed? may we have slowed? may you have slowed? may they have slowed?  | may I have been slowing? may you have been slowing? may he have been slowing? may we have been slowing? may you have been slowing? may they have been slowing?  | 
Simple form | V-ing form | 
| mayn't I slow? mayn't you slow? mayn't he slow? mayn't we slow? mayn't you slow? mayn't they slow?  | mayn't I be slowing? mayn't you be slowing? mayn't he be slowing? mayn't we be slowing? mayn't you be slowing? mayn't they be slowing?  | 
Perfect | V-ing perfect | 
| mayn't I have slowed? mayn't you have slowed? mayn't he have slowed? mayn't we have slowed? mayn't you have slowed? mayn't they have slowed?  | mayn't I have been slowing? mayn't you have been slowing? mayn't he have been slowing? mayn't we have been slowing? mayn't you have been slowing? mayn't they have been slowing?  |