English verb conjugation
CAN PREBOIL

Regular verb: preboil - preboiled - preboiled

Affirmation

Simple form	V-ing form
I can preboil you can preboil he can preboil we can preboil you can preboil they can preboil	I can be preboiling you can be preboiling he can be preboiling we can be preboiling you can be preboiling they can be preboiling
Perfect	V-ing perfect
I can have preboiled you can have preboiled he can have preboiled we can have preboiled you can have preboiled they can have preboiled	I can have been preboiling you can have been preboiling he can have been preboiling we can have been preboiling you can have been preboiling they can have been preboiling

Negation

Simple form	V-ing form
I cannot preboil you cannot preboil he cannot preboil we cannot preboil you cannot preboil they cannot preboil	I cannot be preboiling you cannot be preboiling he cannot be preboiling we cannot be preboiling you cannot be preboiling they cannot be preboiling
Perfect	V-ing perfect
I cannot have preboiled you cannot have preboiled he cannot have preboiled we cannot have preboiled you cannot have preboiled they cannot have preboiled	I cannot have been preboiling you cannot have been preboiling he cannot have been preboiling we cannot have been preboiling you cannot have been preboiling they cannot have been preboiling

Interrogative form

Simple form	V-ing form
can I preboil? can you preboil? can he preboil? can we preboil? can you preboil? can they preboil?	can I be preboiling? can you be preboiling? can he be preboiling? can we be preboiling? can you be preboiling? can they be preboiling?
Perfect	V-ing perfect
can I have preboiled? can you have preboiled? can he have preboiled? can we have preboiled? can you have preboiled? can they have preboiled?	can I have been preboiling? can you have been preboiling? can he have been preboiling? can we have been preboiling? can you have been preboiling? can they have been preboiling?

Interro-negative form

Simple form	V-ing form
can I not preboil? can you not preboil? can he not preboil? can we not preboil? can you not preboil? can they not preboil?	can I not be preboiling? can you not be preboiling? can he not be preboiling? can we not be preboiling? can you not be preboiling? can they not be preboiling?
Perfect	V-ing perfect
can I not have preboiled? can you not have preboiled? can he not have preboiled? can we not have preboiled? can you not have preboiled? can they not have preboiled?	can I not have been preboiling? can you not have been preboiling? can he not have been preboiling? can we not have been preboiling? can you not have been preboiling? can they not have been preboiling?