
Verbo regular: seem - seemed - seemed
Forma simple | Forma con V-ing | 
| - - it'd seem - - -  | - - it'd be seeming - - -  | 
Perfecto | Perfecto con V-ing | 
| - - it should've seemed - - -  | - - it should've been seeming - - -  | 
Forma simple | Forma con V-ing | 
| - - it shouldn't seem - - -  | - - it shouldn't be seeming - - -  | 
Perfecto | Perfecto con V-ing | 
| - - it shouldn't have seemed - - -  | - - it shouldn't have been seeming - - -  | 
Forma simple | Forma con V-ing | 
| - - should it seem? - - -  | - - should it be seeming? - - -  | 
Perfecto | Perfecto con V-ing | 
| - - should it have seemed? - - -  | - - should it have been seeming? - - -  | 
Forma simple | Forma con V-ing | 
| - - shouldn't it seem? - - -  | - - shouldn't it be seeming? - - -  | 
Perfecto | Perfecto con V-ing | 
| - - shouldn't it have seemed? - - -  | - - shouldn't it have been seeming? - - -  |