English verb conjugation
MUST SPRUCE

Regular verb: spruce - spruced - spruced

Affirmation

Simple form	V-ing form
I must spruce you must spruce he must spruce we must spruce you must spruce they must spruce	I must be sprucing you must be sprucing he must be sprucing we must be sprucing you must be sprucing they must be sprucing
Perfect	V-ing perfect
I must have spruced you must have spruced he must have spruced we must have spruced you must have spruced they must have spruced	I must have been sprucing you must have been sprucing he must have been sprucing we must have been sprucing you must have been sprucing they must have been sprucing

Negation

Simple form	V-ing form
I mustn't spruce you mustn't spruce he mustn't spruce we mustn't spruce you mustn't spruce they mustn't spruce	I mustn't be sprucing you mustn't be sprucing he mustn't be sprucing we mustn't be sprucing you mustn't be sprucing they mustn't be sprucing
Perfect	V-ing perfect
I mustn't have spruced you mustn't have spruced he mustn't have spruced we mustn't have spruced you mustn't have spruced they mustn't have spruced	I mustn't have been sprucing you mustn't have been sprucing he mustn't have been sprucing we mustn't have been sprucing you mustn't have been sprucing they mustn't have been sprucing

Interrogative form

Simple form	V-ing form
must I spruce? must you spruce? must he spruce? must we spruce? must you spruce? must they spruce?	must I be sprucing? must you be sprucing? must he be sprucing? must we be sprucing? must you be sprucing? must they be sprucing?
Perfect	V-ing perfect
must I have spruced? must you have spruced? must he have spruced? must we have spruced? must you have spruced? must they have spruced?	must I have been sprucing? must you have been sprucing? must he have been sprucing? must we have been sprucing? must you have been sprucing? must they have been sprucing?

Interro-negative form

Simple form	V-ing form
mustn't I spruce? mustn't you spruce? mustn't he spruce? mustn't we spruce? mustn't you spruce? mustn't they spruce?	mustn't I be sprucing? mustn't you be sprucing? mustn't he be sprucing? mustn't we be sprucing? mustn't you be sprucing? mustn't they be sprucing?
Perfect	V-ing perfect
mustn't I have spruced? mustn't you have spruced? mustn't he have spruced? mustn't we have spruced? mustn't you have spruced? mustn't they have spruced?	mustn't I have been sprucing? mustn't you have been sprucing? mustn't he have been sprucing? mustn't we have been sprucing? mustn't you have been sprucing? mustn't they have been sprucing?