English verb conjugation
MUST SPOIL

Irregular verb: spoil - spoiled, spoilt - spoiled, spoilt

Affirmation

Simple form	V-ing form
I must spoil you must spoil he must spoil we must spoil you must spoil they must spoil	I must be spoiling you must be spoiling he must be spoiling we must be spoiling you must be spoiling they must be spoiling
Perfect	V-ing perfect
I must have spoiled, spoilt you must have spoiled, spoilt he must have spoiled, spoilt we must have spoiled, spoilt you must have spoiled, spoilt they must have spoiled, spoilt	I must have been spoiling you must have been spoiling he must have been spoiling we must have been spoiling you must have been spoiling they must have been spoiling

Negation

Simple form	V-ing form
I must not spoil you must not spoil he must not spoil we must not spoil you must not spoil they must not spoil	I must not be spoiling you must not be spoiling he must not be spoiling we must not be spoiling you must not be spoiling they must not be spoiling
Perfect	V-ing perfect
I must not have spoiled, spoilt you must not have spoiled, spoilt he must not have spoiled, spoilt we must not have spoiled, spoilt you must not have spoiled, spoilt they must not have spoiled, spoilt	I must not have been spoiling you must not have been spoiling he must not have been spoiling we must not have been spoiling you must not have been spoiling they must not have been spoiling

Interrogative form

Simple form	V-ing form
must I spoil? must you spoil? must he spoil? must we spoil? must you spoil? must they spoil?	must I be spoiling? must you be spoiling? must he be spoiling? must we be spoiling? must you be spoiling? must they be spoiling?
Perfect	V-ing perfect
must I have spoiled, spoilt? must you have spoiled, spoilt? must he have spoiled, spoilt? must we have spoiled, spoilt? must you have spoiled, spoilt? must they have spoiled, spoilt?	must I have been spoiling? must you have been spoiling? must he have been spoiling? must we have been spoiling? must you have been spoiling? must they have been spoiling?

Interro-negative form

Simple form	V-ing form
must I not spoil? must you not spoil? must he not spoil? must we not spoil? must you not spoil? must they not spoil?	must I not be spoiling? must you not be spoiling? must he not be spoiling? must we not be spoiling? must you not be spoiling? must they not be spoiling?
Perfect	V-ing perfect
must I not have spoiled, spoilt? must you not have spoiled, spoilt? must he not have spoiled, spoilt? must we not have spoiled, spoilt? must you not have spoiled, spoilt? must they not have spoiled, spoilt?	must I not have been spoiling? must you not have been spoiling? must he not have been spoiling? must we not have been spoiling? must you not have been spoiling? must they not have been spoiling?