
Verbo irregular: tread - trod - trod, trodden
Forma simple | Forma con V-ing | 
| I may tread you may tread he may tread we may tread you may tread they may tread  | I may be treading you may be treading he may be treading we may be treading you may be treading they may be treading  | 
Perfecto | Perfecto con V-ing | 
| I may have trod, trodden you may have trod, trodden he may have trod, trodden we may have trod, trodden you may have trod, trodden they may have trod, trodden  | I may have been treading you may have been treading he may have been treading we may have been treading you may have been treading they may have been treading  | 
Forma simple | Forma con V-ing | 
| I mayn't tread you mayn't tread he mayn't tread we mayn't tread you mayn't tread they mayn't tread  | I mayn't be treading you mayn't be treading he mayn't be treading we mayn't be treading you mayn't be treading they mayn't be treading  | 
Perfecto | Perfecto con V-ing | 
| I mayn't have trod, trodden you mayn't have trod, trodden he mayn't have trod, trodden we mayn't have trod, trodden you mayn't have trod, trodden they mayn't have trod, trodden  | I mayn't have been treading you mayn't have been treading he mayn't have been treading we mayn't have been treading you mayn't have been treading they mayn't have been treading  | 
Forma simple | Forma con V-ing | 
| may I tread? may you tread? may he tread? may we tread? may you tread? may they tread?  | may I be treading? may you be treading? may he be treading? may we be treading? may you be treading? may they be treading?  | 
Perfecto | Perfecto con V-ing | 
| may I have trod, trodden? may you have trod, trodden? may he have trod, trodden? may we have trod, trodden? may you have trod, trodden? may they have trod, trodden?  | may I have been treading? may you have been treading? may he have been treading? may we have been treading? may you have been treading? may they have been treading?  | 
Forma simple | Forma con V-ing | 
| mayn't I tread? mayn't you tread? mayn't he tread? mayn't we tread? mayn't you tread? mayn't they tread?  | mayn't I be treading? mayn't you be treading? mayn't he be treading? mayn't we be treading? mayn't you be treading? mayn't they be treading?  | 
Perfecto | Perfecto con V-ing | 
| mayn't I have trod, trodden? mayn't you have trod, trodden? mayn't he have trod, trodden? mayn't we have trod, trodden? mayn't you have trod, trodden? mayn't they have trod, trodden?  | mayn't I have been treading? mayn't you have been treading? mayn't he have been treading? mayn't we have been treading? mayn't you have been treading? mayn't they have been treading?  |