expressions (phrases, clauses, etc.), colloquial, usually written using kana
1. if (it) doesn't exist; if there is no ...; if (one) doesn't have ...expressions (phrases, clauses, etc.), auxiliary, colloquial, usually written using kana
2. if not ...; unless ...expressions (phrases, clauses, etc.), auxiliary, abbreviation, colloquial, usually written using kana
3. have to ...; must ...