Verbo regular: stumble - stumbled - stumbled
Forma simple | Forma con V-ing |
I could stumble you could stumble she could stumble we could stumble you could stumble they could stumble | I could be stumbling you could be stumbling she could be stumbling we could be stumbling you could be stumbling they could be stumbling |
Perfecto | Perfecto con V-ing |
I could have stumbled you could have stumbled she could have stumbled we could have stumbled you could have stumbled they could have stumbled | I could have been stumbling you could have been stumbling she could have been stumbling we could have been stumbling you could have been stumbling they could have been stumbling |
Forma simple | Forma con V-ing |
I couldn't stumble you couldn't stumble she couldn't stumble we couldn't stumble you couldn't stumble they couldn't stumble | I couldn't be stumbling you couldn't be stumbling she couldn't be stumbling we couldn't be stumbling you couldn't be stumbling they couldn't be stumbling |
Perfecto | Perfecto con V-ing |
I couldn't have stumbled you couldn't have stumbled she couldn't have stumbled we couldn't have stumbled you couldn't have stumbled they couldn't have stumbled | I couldn't have been stumbling you couldn't have been stumbling she couldn't have been stumbling we couldn't have been stumbling you couldn't have been stumbling they couldn't have been stumbling |
Forma simple | Forma con V-ing |
could I stumble? could you stumble? could she stumble? could we stumble? could you stumble? could they stumble? | could I be stumbling? could you be stumbling? could she be stumbling? could we be stumbling? could you be stumbling? could they be stumbling? |
Perfecto | Perfecto con V-ing |
could I have stumbled? could you have stumbled? could she have stumbled? could we have stumbled? could you have stumbled? could they have stumbled? | could I have been stumbling? could you have been stumbling? could she have been stumbling? could we have been stumbling? could you have been stumbling? could they have been stumbling? |
Forma simple | Forma con V-ing |
couldn't I stumble? couldn't you stumble? couldn't she stumble? couldn't we stumble? couldn't you stumble? couldn't they stumble? | couldn't I be stumbling? couldn't you be stumbling? couldn't she be stumbling? couldn't we be stumbling? couldn't you be stumbling? couldn't they be stumbling? |
Perfecto | Perfecto con V-ing |
couldn't I have stumbled? couldn't you have stumbled? couldn't she have stumbled? couldn't we have stumbled? couldn't you have stumbled? couldn't they have stumbled? | couldn't I have been stumbling? couldn't you have been stumbling? couldn't she have been stumbling? couldn't we have been stumbling? couldn't you have been stumbling? couldn't they have been stumbling? |