Ko
(
コ
)
tsu
(
ツ
)
Ko
(
コ
)
tsu
(
ツ
)
App Store
Google Play
Vocabulary
N1
Day 5
役立つ
New
役立つ
役立つ
やくだつ
to be helpful, to be useful
Group 1 verb
hybrid word
Lv.3
Again
1
Hard
2
Good
3
Easy
4
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Space flip · 1–4 grade · ← → move
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