English verb conjugation
MUST LOOSEN

Regular verb: loosen - loosened - loosened

Affirmation

Simple form	V-ing form
I must loosen you must loosen he must loosen we must loosen you must loosen they must loosen	I must be loosening you must be loosening he must be loosening we must be loosening you must be loosening they must be loosening
Perfect	V-ing perfect
I must have loosened you must have loosened he must have loosened we must have loosened you must have loosened they must have loosened	I must have been loosening you must have been loosening he must have been loosening we must have been loosening you must have been loosening they must have been loosening

Negation

Simple form	V-ing form
I mustn't loosen you mustn't loosen he mustn't loosen we mustn't loosen you mustn't loosen they mustn't loosen	I mustn't be loosening you mustn't be loosening he mustn't be loosening we mustn't be loosening you mustn't be loosening they mustn't be loosening
Perfect	V-ing perfect
I mustn't have loosened you mustn't have loosened he mustn't have loosened we mustn't have loosened you mustn't have loosened they mustn't have loosened	I mustn't have been loosening you mustn't have been loosening he mustn't have been loosening we mustn't have been loosening you mustn't have been loosening they mustn't have been loosening

Interrogative form

Simple form	V-ing form
must I loosen? must you loosen? must he loosen? must we loosen? must you loosen? must they loosen?	must I be loosening? must you be loosening? must he be loosening? must we be loosening? must you be loosening? must they be loosening?
Perfect	V-ing perfect
must I have loosened? must you have loosened? must he have loosened? must we have loosened? must you have loosened? must they have loosened?	must I have been loosening? must you have been loosening? must he have been loosening? must we have been loosening? must you have been loosening? must they have been loosening?

Interro-negative form

Simple form	V-ing form
mustn't I loosen? mustn't you loosen? mustn't he loosen? mustn't we loosen? mustn't you loosen? mustn't they loosen?	mustn't I be loosening? mustn't you be loosening? mustn't he be loosening? mustn't we be loosening? mustn't you be loosening? mustn't they be loosening?
Perfect	V-ing perfect
mustn't I have loosened? mustn't you have loosened? mustn't he have loosened? mustn't we have loosened? mustn't you have loosened? mustn't they have loosened?	mustn't I have been loosening? mustn't you have been loosening? mustn't he have been loosening? mustn't we have been loosening? mustn't you have been loosening? mustn't they have been loosening?