
Verbo regular: fasten - fastened - fastened
Forma simple | Forma con V-ing | 
| I might fasten you might fasten he might fasten we might fasten you might fasten they might fasten  | I might be fastening you might be fastening he might be fastening we might be fastening you might be fastening they might be fastening  | 
Perfecto | Perfecto con V-ing | 
| I might have fastened you might have fastened he might have fastened we might have fastened you might have fastened they might have fastened  | I might have been fastening you might have been fastening he might have been fastening we might have been fastening you might have been fastening they might have been fastening  | 
Forma simple | Forma con V-ing | 
| I mightn't fasten you mightn't fasten he mightn't fasten we mightn't fasten you mightn't fasten they mightn't fasten  | I mightn't be fastening you mightn't be fastening he mightn't be fastening we mightn't be fastening you mightn't be fastening they mightn't be fastening  | 
Perfecto | Perfecto con V-ing | 
| I mightn't have fastened you mightn't have fastened he mightn't have fastened we mightn't have fastened you mightn't have fastened they mightn't have fastened  | I mightn't have been fastening you mightn't have been fastening he mightn't have been fastening we mightn't have been fastening you mightn't have been fastening they mightn't have been fastening  | 
Forma simple | Forma con V-ing | 
| might I fasten? might you fasten? might he fasten? might we fasten? might you fasten? might they fasten?  | might I be fastening? might you be fastening? might he be fastening? might we be fastening? might you be fastening? might they be fastening?  | 
Perfecto | Perfecto con V-ing | 
| might I have fastened? might you have fastened? might he have fastened? might we have fastened? might you have fastened? might they have fastened?  | might I have been fastening? might you have been fastening? might he have been fastening? might we have been fastening? might you have been fastening? might they have been fastening?  | 
Forma simple | Forma con V-ing | 
| mightn't I fasten? mightn't you fasten? mightn't he fasten? mightn't we fasten? mightn't you fasten? mightn't they fasten?  | mightn't I be fastening? mightn't you be fastening? mightn't he be fastening? mightn't we be fastening? mightn't you be fastening? mightn't they be fastening?  | 
Perfecto | Perfecto con V-ing | 
| mightn't I have fastened? mightn't you have fastened? mightn't he have fastened? mightn't we have fastened? mightn't you have fastened? mightn't they have fastened?  | mightn't I have been fastening? mightn't you have been fastening? mightn't he have been fastening? mightn't we have been fastening? mightn't you have been fastening? mightn't they have been fastening?  |