English verb conjugation
SHALL BACK

Regular verb: back - backed - backed

Affirmation

Simple form	V-ing form
I shall back you shall back he shall back we shall back you shall back they shall back	I shall be backing you shall be backing he shall be backing we shall be backing you shall be backing they shall be backing
Perfect	V-ing perfect
I shall have backed you shall have backed he shall have backed we shall have backed you shall have backed they shall have backed	I shall have been backing you shall have been backing he shall have been backing we shall have been backing you shall have been backing they shall have been backing

Negation

Simple form	V-ing form
I shall not back you shall not back he shall not back we shall not back you shall not back they shall not back	I shall not be backing you shall not be backing he shall not be backing we shall not be backing you shall not be backing they shall not be backing
Perfect	V-ing perfect
I shall not have backed you shall not have backed he shall not have backed we shall not have backed you shall not have backed they shall not have backed	I shall not have been backing you shall not have been backing he shall not have been backing we shall not have been backing you shall not have been backing they shall not have been backing

Interrogative form

Simple form	V-ing form
shall I back? shall you back? shall he back? shall we back? shall you back? shall they back?	shall I be backing? shall you be backing? shall he be backing? shall we be backing? shall you be backing? shall they be backing?
Perfect	V-ing perfect
shall I have backed? shall you have backed? shall he have backed? shall we have backed? shall you have backed? shall they have backed?	shall I have been backing? shall you have been backing? shall he have been backing? shall we have been backing? shall you have been backing? shall they have been backing?

Interro-negative form

Simple form	V-ing form
shall I not back? shall you not back? shall he not back? shall we not back? shall you not back? shall they not back?	shall I not be backing? shall you not be backing? shall he not be backing? shall we not be backing? shall you not be backing? shall they not be backing?
Perfect	V-ing perfect
shall I not have backed? shall you not have backed? shall he not have backed? shall we not have backed? shall you not have backed? shall they not have backed?	shall I not have been backing? shall you not have been backing? shall he not have been backing? shall we not have been backing? shall you not have been backing? shall they not have been backing?