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