
Verbo regular: stain - stained - stained
Forma simple | Forma con V-ing | 
| I'd stain you'd stain she'd stain we'd stain you'd stain they'd stain  | I'd be staining you'd be staining she'd be staining we'd be staining you'd be staining they'd be staining  | 
Perfecto | Perfecto con V-ing | 
| I should've stained you should've stained she should've stained we should've stained you should've stained they should've stained  | I should've been staining you should've been staining she should've been staining we should've been staining you should've been staining they should've been staining  | 
Forma simple | Forma con V-ing | 
| I shouldn't stain you shouldn't stain she shouldn't stain we shouldn't stain you shouldn't stain they shouldn't stain  | I shouldn't be staining you shouldn't be staining she shouldn't be staining we shouldn't be staining you shouldn't be staining they shouldn't be staining  | 
Perfecto | Perfecto con V-ing | 
| I shouldn't have stained you shouldn't have stained she shouldn't have stained we shouldn't have stained you shouldn't have stained they shouldn't have stained  | I shouldn't have been staining you shouldn't have been staining she shouldn't have been staining we shouldn't have been staining you shouldn't have been staining they shouldn't have been staining  | 
Forma simple | Forma con V-ing | 
| should I stain? should you stain? should she stain? should we stain? should you stain? should they stain?  | should I be staining? should you be staining? should she be staining? should we be staining? should you be staining? should they be staining?  | 
Perfecto | Perfecto con V-ing | 
| should I have stained? should you have stained? should she have stained? should we have stained? should you have stained? should they have stained?  | should I have been staining? should you have been staining? should she have been staining? should we have been staining? should you have been staining? should they have been staining?  | 
Forma simple | Forma con V-ing | 
| shouldn't I stain? shouldn't you stain? shouldn't she stain? shouldn't we stain? shouldn't you stain? shouldn't they stain?  | shouldn't I be staining? shouldn't you be staining? shouldn't she be staining? shouldn't we be staining? shouldn't you be staining? shouldn't they be staining?  | 
Perfecto | Perfecto con V-ing | 
| shouldn't I have stained? shouldn't you have stained? shouldn't she have stained? shouldn't we have stained? shouldn't you have stained? shouldn't they have stained?  | shouldn't I have been staining? shouldn't you have been staining? shouldn't she have been staining? shouldn't we have been staining? shouldn't you have been staining? shouldn't they have been staining?  |