Conjugación del verbo inglés
COULD CRUMBLE

Verbo regular: crumble - crumbled - crumbled

Afirmación

Forma simple	Forma con V-ing
I could crumble you could crumble he could crumble we could crumble you could crumble they could crumble	I could be crumbling you could be crumbling he could be crumbling we could be crumbling you could be crumbling they could be crumbling
Perfecto	Perfecto con V-ing
I could have crumbled you could have crumbled he could have crumbled we could have crumbled you could have crumbled they could have crumbled	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

Negación

Forma simple	Forma con V-ing
I couldn't crumble you couldn't crumble he couldn't crumble we couldn't crumble you couldn't crumble they couldn't crumble	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
Perfecto	Perfecto con V-ing
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	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	Forma con V-ing
could I crumble? could you crumble? could he crumble? could we crumble? could you crumble? could they crumble?	could I be crumbling? could you be crumbling? could he be crumbling? could we be crumbling? could you be crumbling? could they be crumbling?
Perfecto	Perfecto con V-ing
could I have crumbled? could you have crumbled? could he have crumbled? could we have crumbled? could you have crumbled? could they have crumbled?	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-negativa

Forma simple	Forma con V-ing
couldn't I crumble? couldn't you crumble? couldn't he crumble? couldn't we crumble? couldn't you crumble? couldn't they crumble?	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?
Perfecto	Perfecto con V-ing
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?	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?