shall crumble
Verbo regular: crumble - crumbled- crumbled

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

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall not crumble
you shall not crumble
he shall not crumble
we shall not crumble
you shall not crumble
they shall not crumble 	I shall not be crumbling
you shall not be crumbling
he shall not be crumbling
we shall not be crumbling
you shall not be crumbling
they shall not be crumbling	I shall not have crumbled
you shall not have crumbled
he shall not have crumbled
we shall not have crumbled
you shall not have crumbled
they shall not have crumbled	I shall not have been crumbling
you shall not have been crumbling
he shall not have been crumbling
we shall not have been crumbling
you shall not have been crumbling
they shall not have been crumbling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I crumble?
shall you crumble?
shall he crumble?
shall we crumble?
shall you crumble?
shall they crumble? 	shall I be crumbling?
shall you be crumbling?
shall he be crumbling?
shall we be crumbling?
shall you be crumbling?
shall they be crumbling? 	shall I have crumbled?
shall you have crumbled?
shall he have crumbled?
shall we have crumbled?
shall you have crumbled?
shall they have crumbled? 	shall I have been crumbling?
shall you have been crumbling?
shall he have been crumbling?
shall we have been crumbling?
shall you have been crumbling?
shall they have been crumbling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I not crumble?
shall you not crumble?
shall he not crumble?
shall we not crumble?
shall you not crumble?
shall they not crumble? 	shall I not be crumbling?
shall you not be crumbling?
shall he not be crumbling?
shall we not be crumbling?
shall you not be crumbling?
shall they not be crumbling? 	shall I not have crumbled?
shall you not have crumbled?
shall he not have crumbled?
shall we not have crumbled?
shall you not have crumbled?
shall they not have crumbled? 	shall I not have been crumbling?
shall you not have been crumbling?
shall he not have been crumbling?
shall we not have been crumbling?
shall you not have been crumbling?
shall they not have been crumbling?