Shirabe
一人 ずつ

宛ずつ

Common suffix
English jmdict
1
suffix word usually written using kana alone apiece;each
１つ１つの出願を１件ずつ考慮しなければならないだろう。
We will have to consider each application on a case-by-case basis.
2
suffix word usually written using kana alone at a time;piecemeal
その一節を一語ずつ訳しなさい。
Translate the passage word for word.
English jmdict
1
adverb (fukushi) one by one;one at a time;in turn
Other forms 一人宛 【ひとりずつ】 (rarely used kanji form)