English verb conjugation
MUST ABBREVIATE

Regular verb: abbreviate - abbreviated - abbreviated

Affirmation

Simple form	V-ing form
I must abbreviate you must abbreviate he must abbreviate we must abbreviate you must abbreviate they must abbreviate	I must be abbreviating you must be abbreviating he must be abbreviating we must be abbreviating you must be abbreviating they must be abbreviating
Perfect	V-ing perfect
I must have abbreviated you must have abbreviated he must have abbreviated we must have abbreviated you must have abbreviated they must have abbreviated	I must have been abbreviating you must have been abbreviating he must have been abbreviating we must have been abbreviating you must have been abbreviating they must have been abbreviating

Negation

Simple form	V-ing form
I mustn't abbreviate you mustn't abbreviate he mustn't abbreviate we mustn't abbreviate you mustn't abbreviate they mustn't abbreviate	I mustn't be abbreviating you mustn't be abbreviating he mustn't be abbreviating we mustn't be abbreviating you mustn't be abbreviating they mustn't be abbreviating
Perfect	V-ing perfect
I mustn't have abbreviated you mustn't have abbreviated he mustn't have abbreviated we mustn't have abbreviated you mustn't have abbreviated they mustn't have abbreviated	I mustn't have been abbreviating you mustn't have been abbreviating he mustn't have been abbreviating we mustn't have been abbreviating you mustn't have been abbreviating they mustn't have been abbreviating

Interrogative form

Simple form	V-ing form
must I abbreviate? must you abbreviate? must he abbreviate? must we abbreviate? must you abbreviate? must they abbreviate?	must I be abbreviating? must you be abbreviating? must he be abbreviating? must we be abbreviating? must you be abbreviating? must they be abbreviating?
Perfect	V-ing perfect
must I have abbreviated? must you have abbreviated? must he have abbreviated? must we have abbreviated? must you have abbreviated? must they have abbreviated?	must I have been abbreviating? must you have been abbreviating? must he have been abbreviating? must we have been abbreviating? must you have been abbreviating? must they have been abbreviating?

Interro-negative form

Simple form	V-ing form
mustn't I abbreviate? mustn't you abbreviate? mustn't he abbreviate? mustn't we abbreviate? mustn't you abbreviate? mustn't they abbreviate?	mustn't I be abbreviating? mustn't you be abbreviating? mustn't he be abbreviating? mustn't we be abbreviating? mustn't you be abbreviating? mustn't they be abbreviating?
Perfect	V-ing perfect
mustn't I have abbreviated? mustn't you have abbreviated? mustn't he have abbreviated? mustn't we have abbreviated? mustn't you have abbreviated? mustn't they have abbreviated?	mustn't I have been abbreviating? mustn't you have been abbreviating? mustn't he have been abbreviating? mustn't we have been abbreviating? mustn't you have been abbreviating? mustn't they have been abbreviating?