English verb conjugation
SHALL SACK SACK

Regular verb: sack sack - sack sacked - sack sacked

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I shall sack sack you shall sack sack he shall sack sack we shall sack sack you shall sack sack they shall sack sack	I shall be sack sacking you shall be sack sacking he shall be sack sacking we shall be sack sacking you shall be sack sacking they shall be sack sacking
Perfect	V-ing perfect
I shall have sack sacked you shall have sack sacked he shall have sack sacked we shall have sack sacked you shall have sack sacked they shall have sack sacked	I shall have been sack sacking you shall have been sack sacking he shall have been sack sacking we shall have been sack sacking you shall have been sack sacking they shall have been sack sacking

Negation

Simple form	V-ing form
I shall not sack sack you shall not sack sack he shall not sack sack we shall not sack sack you shall not sack sack they shall not sack sack	I shall not be sack sacking you shall not be sack sacking he shall not be sack sacking we shall not be sack sacking you shall not be sack sacking they shall not be sack sacking
Perfect	V-ing perfect
I shall not have sack sacked you shall not have sack sacked he shall not have sack sacked we shall not have sack sacked you shall not have sack sacked they shall not have sack sacked	I shall not have been sack sacking you shall not have been sack sacking he shall not have been sack sacking we shall not have been sack sacking you shall not have been sack sacking they shall not have been sack sacking

Interrogative form

Simple form	V-ing form
shall I sack sack? shall you sack sack? shall he sack sack? shall we sack sack? shall you sack sack? shall they sack sack?	shall I be sack sacking? shall you be sack sacking? shall he be sack sacking? shall we be sack sacking? shall you be sack sacking? shall they be sack sacking?
Perfect	V-ing perfect
shall I have sack sacked? shall you have sack sacked? shall he have sack sacked? shall we have sack sacked? shall you have sack sacked? shall they have sack sacked?	shall I have been sack sacking? shall you have been sack sacking? shall he have been sack sacking? shall we have been sack sacking? shall you have been sack sacking? shall they have been sack sacking?

Interro-negative form

Simple form	V-ing form
shall I not sack sack? shall you not sack sack? shall he not sack sack? shall we not sack sack? shall you not sack sack? shall they not sack sack?	shall I not be sack sacking? shall you not be sack sacking? shall he not be sack sacking? shall we not be sack sacking? shall you not be sack sacking? shall they not be sack sacking?
Perfect	V-ing perfect
shall I not have sack sacked? shall you not have sack sacked? shall he not have sack sacked? shall we not have sack sacked? shall you not have sack sacked? shall they not have sack sacked?	shall I not have been sack sacking? shall you not have been sack sacking? shall he not have been sack sacking? shall we not have been sack sacking? shall you not have been sack sacking? shall they not have been sack sacking?