
Regular verb: dam - dammed - dammed
Simple form | V-ing form | 
| I'd dam you'd dam she'd dam we'd dam you'd dam they'd dam  | I'd be damming you'd be damming she'd be damming we'd be damming you'd be damming they'd be damming  | 
Perfect | V-ing perfect | 
| I should've dammed you should've dammed she should've dammed we should've dammed you should've dammed they should've dammed  | I should've been damming you should've been damming she should've been damming we should've been damming you should've been damming they should've been damming  | 
Simple form | V-ing form | 
| I shouldn't dam you shouldn't dam she shouldn't dam we shouldn't dam you shouldn't dam they shouldn't dam  | I shouldn't be damming you shouldn't be damming she shouldn't be damming we shouldn't be damming you shouldn't be damming they shouldn't be damming  | 
Perfect | V-ing perfect | 
| I shouldn't have dammed you shouldn't have dammed she shouldn't have dammed we shouldn't have dammed you shouldn't have dammed they shouldn't have dammed  | I shouldn't have been damming you shouldn't have been damming she shouldn't have been damming we shouldn't have been damming you shouldn't have been damming they shouldn't have been damming  | 
Simple form | V-ing form | 
| should I dam? should you dam? should she dam? should we dam? should you dam? should they dam?  | should I be damming? should you be damming? should she be damming? should we be damming? should you be damming? should they be damming?  | 
Perfect | V-ing perfect | 
| should I have dammed? should you have dammed? should she have dammed? should we have dammed? should you have dammed? should they have dammed?  | should I have been damming? should you have been damming? should she have been damming? should we have been damming? should you have been damming? should they have been damming?  | 
Simple form | V-ing form | 
| shouldn't I dam? shouldn't you dam? shouldn't she dam? shouldn't we dam? shouldn't you dam? shouldn't they dam?  | shouldn't I be damming? shouldn't you be damming? shouldn't she be damming? shouldn't we be damming? shouldn't you be damming? shouldn't they be damming?  | 
Perfect | V-ing perfect | 
| shouldn't I have dammed? shouldn't you have dammed? shouldn't she have dammed? shouldn't we have dammed? shouldn't you have dammed? shouldn't they have dammed?  | shouldn't I have been damming? shouldn't you have been damming? shouldn't she have been damming? shouldn't we have been damming? shouldn't you have been damming? shouldn't they have been damming?  |