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