English verb conjugation
SHALL CRUMBLE

Regular verb: crumble - crumbled - crumbled

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?