English verb conjugation
CAN OIL

Regular verb: oil - oiled - oiled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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