English verb conjugation
MUST LOOSEN

Regular verb: loosen - loosened - loosened

Affirmation

Simple form	V-ing form
I must loosen you must loosen she must loosen we must loosen you must loosen they must loosen	I must be loosening you must be loosening she 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 she 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 she 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 she 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 she 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 she 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 she 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 she loosen? must we loosen? must you loosen? must they loosen?	must I be loosening? must you be loosening? must she 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 she 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 she 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 she 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 she 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 she 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 she have been loosening? mustn't we have been loosening? mustn't you have been loosening? mustn't they have been loosening?