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 must not spackle you must not spackle he must not spackle we must not spackle you must not spackle they must not spackle	I must not be spackling you must not be spackling he must not be spackling we must not be spackling you must not be spackling they must not be spackling
Perfect	V-ing perfect
I must not have spackled you must not have spackled he must not have spackled we must not have spackled you must not have spackled they must not have spackled	I must not have been spackling you must not have been spackling he must not have been spackling we must not have been spackling you must not have been spackling they must not 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
must I not spackle? must you not spackle? must he not spackle? must we not spackle? must you not spackle? must they not spackle?	must I not be spackling? must you not be spackling? must he not be spackling? must we not be spackling? must you not be spackling? must they not be spackling?
Perfect	V-ing perfect
must I not have spackled? must you not have spackled? must he not have spackled? must we not have spackled? must you not have spackled? must they not have spackled?	must I not have been spackling? must you not have been spackling? must he not have been spackling? must we not have been spackling? must you not have been spackling? must they not have been spackling?