English verb conjugation
MUST SPARKLE

Regular verb: sparkle - sparkled - sparkled

Affirmation

Simple form	V-ing form
I must sparkle you must sparkle he must sparkle we must sparkle you must sparkle they must sparkle	I must be sparkling you must be sparkling he must be sparkling we must be sparkling you must be sparkling they must be sparkling
Perfect	V-ing perfect
I must have sparkled you must have sparkled he must have sparkled we must have sparkled you must have sparkled they must have sparkled	I must have been sparkling you must have been sparkling he must have been sparkling we must have been sparkling you must have been sparkling they must have been sparkling

Negation

Simple form	V-ing form
I mustn't sparkle you mustn't sparkle he mustn't sparkle we mustn't sparkle you mustn't sparkle they mustn't sparkle	I mustn't be sparkling you mustn't be sparkling he mustn't be sparkling we mustn't be sparkling you mustn't be sparkling they mustn't be sparkling
Perfect	V-ing perfect
I mustn't have sparkled you mustn't have sparkled he mustn't have sparkled we mustn't have sparkled you mustn't have sparkled they mustn't have sparkled	I mustn't have been sparkling you mustn't have been sparkling he mustn't have been sparkling we mustn't have been sparkling you mustn't have been sparkling they mustn't have been sparkling

Interrogative form

Simple form	V-ing form
must I sparkle? must you sparkle? must he sparkle? must we sparkle? must you sparkle? must they sparkle?	must I be sparkling? must you be sparkling? must he be sparkling? must we be sparkling? must you be sparkling? must they be sparkling?
Perfect	V-ing perfect
must I have sparkled? must you have sparkled? must he have sparkled? must we have sparkled? must you have sparkled? must they have sparkled?	must I have been sparkling? must you have been sparkling? must he have been sparkling? must we have been sparkling? must you have been sparkling? must they have been sparkling?

Interro-negative form

Simple form	V-ing form
mustn't I sparkle? mustn't you sparkle? mustn't he sparkle? mustn't we sparkle? mustn't you sparkle? mustn't they sparkle?	mustn't I be sparkling? mustn't you be sparkling? mustn't he be sparkling? mustn't we be sparkling? mustn't you be sparkling? mustn't they be sparkling?
Perfect	V-ing perfect
mustn't I have sparkled? mustn't you have sparkled? mustn't he have sparkled? mustn't we have sparkled? mustn't you have sparkled? mustn't they have sparkled?	mustn't I have been sparkling? mustn't you have been sparkling? mustn't he have been sparkling? mustn't we have been sparkling? mustn't you have been sparkling? mustn't they have been sparkling?