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