English verb conjugation
SHALL SLACKEN

Regular verb: slacken - slackened - slackened

Affirmation

Simple form	V-ing form
I shall slacken you shall slacken he shall slacken we shall slacken you shall slacken they shall slacken	I shall be slackening you shall be slackening he shall be slackening we shall be slackening you shall be slackening they shall be slackening
Perfect	V-ing perfect
I shall have slackened you shall have slackened he shall have slackened we shall have slackened you shall have slackened they shall have slackened	I shall have been slackening you shall have been slackening he shall have been slackening we shall have been slackening you shall have been slackening they shall have been slackening

Negation

Simple form	V-ing form
I shall not slacken you shall not slacken he shall not slacken we shall not slacken you shall not slacken they shall not slacken	I shall not be slackening you shall not be slackening he shall not be slackening we shall not be slackening you shall not be slackening they shall not be slackening
Perfect	V-ing perfect
I shall not have slackened you shall not have slackened he shall not have slackened we shall not have slackened you shall not have slackened they shall not have slackened	I shall not have been slackening you shall not have been slackening he shall not have been slackening we shall not have been slackening you shall not have been slackening they shall not have been slackening

Interrogative form

Simple form	V-ing form
shall I slacken? shall you slacken? shall he slacken? shall we slacken? shall you slacken? shall they slacken?	shall I be slackening? shall you be slackening? shall he be slackening? shall we be slackening? shall you be slackening? shall they be slackening?
Perfect	V-ing perfect
shall I have slackened? shall you have slackened? shall he have slackened? shall we have slackened? shall you have slackened? shall they have slackened?	shall I have been slackening? shall you have been slackening? shall he have been slackening? shall we have been slackening? shall you have been slackening? shall they have been slackening?

Interro-negative form

Simple form	V-ing form
shall I not slacken? shall you not slacken? shall he not slacken? shall we not slacken? shall you not slacken? shall they not slacken?	shall I not be slackening? shall you not be slackening? shall he not be slackening? shall we not be slackening? shall you not be slackening? shall they not be slackening?
Perfect	V-ing perfect
shall I not have slackened? shall you not have slackened? shall he not have slackened? shall we not have slackened? shall you not have slackened? shall they not have slackened?	shall I not have been slackening? shall you not have been slackening? shall he not have been slackening? shall we not have been slackening? shall you not have been slackening? shall they not have been slackening?