書けばいい

should write

→ 書く
phrase Rare #36,642
should write Uses the conditional form 書けば with いい to ask or suggest what someone should write. Depending on context, it can also mean “just write.”
JA: 申込書には何を書けばいいですか?
EN: What should I write on the application form?

この新しいドイツ何を書けばいいのか

What am I supposed to write in this new Germany?

— 善き人のためのソナタ (2006)

に会いたいけどどう書けばいいあなたの経験から教えて

I want to see my husband, but based on your experience, could you tell me how I should write that?

— セントラル・ステーション (1998)

ここに名前と住所を書けばいいだけだよ

You just need to write your name and address here.

あなた自身書けばいい

You can just write about yourself.

— 落下の解剖学 (2023)