English verb conjugation
MUST SUGAR

Regular verb: sugar - sugared - sugared

Affirmation

Simple form	V-ing form
I must sugar you must sugar he must sugar we must sugar you must sugar they must sugar	I must be sugaring you must be sugaring he must be sugaring we must be sugaring you must be sugaring they must be sugaring
Perfect	V-ing perfect
I must have sugared you must have sugared he must have sugared we must have sugared you must have sugared they must have sugared	I must have been sugaring you must have been sugaring he must have been sugaring we must have been sugaring you must have been sugaring they must have been sugaring

Negation

Simple form	V-ing form
I mustn't sugar you mustn't sugar he mustn't sugar we mustn't sugar you mustn't sugar they mustn't sugar	I mustn't be sugaring you mustn't be sugaring he mustn't be sugaring we mustn't be sugaring you mustn't be sugaring they mustn't be sugaring
Perfect	V-ing perfect
I mustn't have sugared you mustn't have sugared he mustn't have sugared we mustn't have sugared you mustn't have sugared they mustn't have sugared	I mustn't have been sugaring you mustn't have been sugaring he mustn't have been sugaring we mustn't have been sugaring you mustn't have been sugaring they mustn't have been sugaring

Interrogative form

Simple form	V-ing form
must I sugar? must you sugar? must he sugar? must we sugar? must you sugar? must they sugar?	must I be sugaring? must you be sugaring? must he be sugaring? must we be sugaring? must you be sugaring? must they be sugaring?
Perfect	V-ing perfect
must I have sugared? must you have sugared? must he have sugared? must we have sugared? must you have sugared? must they have sugared?	must I have been sugaring? must you have been sugaring? must he have been sugaring? must we have been sugaring? must you have been sugaring? must they have been sugaring?

Interro-negative form

Simple form	V-ing form
mustn't I sugar? mustn't you sugar? mustn't he sugar? mustn't we sugar? mustn't you sugar? mustn't they sugar?	mustn't I be sugaring? mustn't you be sugaring? mustn't he be sugaring? mustn't we be sugaring? mustn't you be sugaring? mustn't they be sugaring?
Perfect	V-ing perfect
mustn't I have sugared? mustn't you have sugared? mustn't he have sugared? mustn't we have sugared? mustn't you have sugared? mustn't they have sugared?	mustn't I have been sugaring? mustn't you have been sugaring? mustn't he have been sugaring? mustn't we have been sugaring? mustn't you have been sugaring? mustn't they have been sugaring?