English verb conjugation
MUST OIL

Regular verb: oil - oiled - oiled

Affirmation

Simple form	V-ing form
I must oil you must oil he must oil we must oil you must oil they must oil	I must be oiling you must be oiling he must be oiling we must be oiling you must be oiling they must be oiling
Perfect	V-ing perfect
I must have oiled you must have oiled he must have oiled we must have oiled you must have oiled they must have oiled	I must have been oiling you must have been oiling he must have been oiling we must have been oiling you must have been oiling they must have been oiling

Negation

Simple form	V-ing form
I must not oil you must not oil he must not oil we must not oil you must not oil they must not oil	I must not be oiling you must not be oiling he must not be oiling we must not be oiling you must not be oiling they must not be oiling
Perfect	V-ing perfect
I must not have oiled you must not have oiled he must not have oiled we must not have oiled you must not have oiled they must not have oiled	I must not have been oiling you must not have been oiling he must not have been oiling we must not have been oiling you must not have been oiling they must not have been oiling

Interrogative form

Simple form	V-ing form
must I oil? must you oil? must he oil? must we oil? must you oil? must they oil?	must I be oiling? must you be oiling? must he be oiling? must we be oiling? must you be oiling? must they be oiling?
Perfect	V-ing perfect
must I have oiled? must you have oiled? must he have oiled? must we have oiled? must you have oiled? must they have oiled?	must I have been oiling? must you have been oiling? must he have been oiling? must we have been oiling? must you have been oiling? must they have been oiling?

Interro-negative form

Simple form	V-ing form
must I not oil? must you not oil? must he not oil? must we not oil? must you not oil? must they not oil?	must I not be oiling? must you not be oiling? must he not be oiling? must we not be oiling? must you not be oiling? must they not be oiling?
Perfect	V-ing perfect
must I not have oiled? must you not have oiled? must he not have oiled? must we not have oiled? must you not have oiled? must they not have oiled?	must I not have been oiling? must you not have been oiling? must he not have been oiling? must we not have been oiling? must you not have been oiling? must they not have been oiling?