I could crumble you could crumble he could crumble we could crumble you could crumble they could crumble
Forma com V-ing
I could be crumbling you could be crumbling he could be crumbling we could be crumbling you could be crumbling they could be crumbling
Perfeito
I could have crumbled you could have crumbled he could have crumbled we could have crumbled you could have crumbled they could have crumbled
Perfeito com V-ing
I could have been crumbling you could have been crumbling he could have been crumbling we could have been crumbling you could have been crumbling they could have been crumbling
Negação
Forma simple
I couldn't crumble you couldn't crumble he couldn't crumble we couldn't crumble you couldn't crumble they couldn't crumble
Forma com V-ing
I couldn't be crumbling you couldn't be crumbling he couldn't be crumbling we couldn't be crumbling you couldn't be crumbling they couldn't be crumbling
Perfeito
I couldn't have crumbled you couldn't have crumbled he couldn't have crumbled we couldn't have crumbled you couldn't have crumbled they couldn't have crumbled
Perfeito com V-ing
I couldn't have been crumbling you couldn't have been crumbling he couldn't have been crumbling we couldn't have been crumbling you couldn't have been crumbling they couldn't have been crumbling
Forma interrogativa
Forma simple
could I crumble? could you crumble? could he crumble? could we crumble? could you crumble? could they crumble?
Forma com V-ing
could I be crumbling? could you be crumbling? could he be crumbling? could we be crumbling? could you be crumbling? could they be crumbling?
Perfeito
could I have crumbled? could you have crumbled? could he have crumbled? could we have crumbled? could you have crumbled? could they have crumbled?
Perfeito com V-ing
could I have been crumbling? could you have been crumbling? could he have been crumbling? could we have been crumbling? could you have been crumbling? could they have been crumbling?
Forma interro-Negação
Forma simple
couldn't I crumble? couldn't you crumble? couldn't he crumble? couldn't we crumble? couldn't you crumble? couldn't they crumble?
Forma com V-ing
couldn't I be crumbling? couldn't you be crumbling? couldn't he be crumbling? couldn't we be crumbling? couldn't you be crumbling? couldn't they be crumbling?
Perfeito
couldn't I have crumbled? couldn't you have crumbled? couldn't he have crumbled? couldn't we have crumbled? couldn't you have crumbled? couldn't they have crumbled?
Perfeito com V-ing
couldn't I have been crumbling? couldn't you have been crumbling? couldn't he have been crumbling? couldn't we have been crumbling? couldn't you have been crumbling? couldn't they have been crumbling?