English verb conjugation
MUST SPACKLE

Regular verb: spackle - spackled - spackled

Affirmation

Simple form	V-ing form
I must spackle you must spackle he must spackle we must spackle you must spackle they must spackle	I must be spackling you must be spackling he must be spackling we must be spackling you must be spackling they must be spackling
Perfect	V-ing perfect
I must have spackled you must have spackled he must have spackled we must have spackled you must have spackled they must have spackled	I must have been spackling you must have been spackling he must have been spackling we must have been spackling you must have been spackling they must have been spackling

Negation

Simple form	V-ing form
I mustn't spackle you mustn't spackle he mustn't spackle we mustn't spackle you mustn't spackle they mustn't spackle	I mustn't be spackling you mustn't be spackling he mustn't be spackling we mustn't be spackling you mustn't be spackling they mustn't be spackling
Perfect	V-ing perfect
I mustn't have spackled you mustn't have spackled he mustn't have spackled we mustn't have spackled you mustn't have spackled they mustn't have spackled	I mustn't have been spackling you mustn't have been spackling he mustn't have been spackling we mustn't have been spackling you mustn't have been spackling they mustn't have been spackling

Interrogative form

Simple form	V-ing form
must I spackle? must you spackle? must he spackle? must we spackle? must you spackle? must they spackle?	must I be spackling? must you be spackling? must he be spackling? must we be spackling? must you be spackling? must they be spackling?
Perfect	V-ing perfect
must I have spackled? must you have spackled? must he have spackled? must we have spackled? must you have spackled? must they have spackled?	must I have been spackling? must you have been spackling? must he have been spackling? must we have been spackling? must you have been spackling? must they have been spackling?

Interro-negative form

Simple form	V-ing form
mustn't I spackle? mustn't you spackle? mustn't he spackle? mustn't we spackle? mustn't you spackle? mustn't they spackle?	mustn't I be spackling? mustn't you be spackling? mustn't he be spackling? mustn't we be spackling? mustn't you be spackling? mustn't they be spackling?
Perfect	V-ing perfect
mustn't I have spackled? mustn't you have spackled? mustn't he have spackled? mustn't we have spackled? mustn't you have spackled? mustn't they have spackled?	mustn't I have been spackling? mustn't you have been spackling? mustn't he have been spackling? mustn't we have been spackling? mustn't you have been spackling? mustn't they have been spackling?