Ko
(
コ
)
tsu
(
ツ
)
Ko
(
コ
)
tsu
(
ツ
)
App Store
Google Play
Vocabulary
Non-JLPT
Day 18
単
New
単
単
たん
single ~ (as in 単独・単一)
prefix
Sino-Japanese
Lv.4
Again
1
Hard
2
Good
3
Easy
4
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Space flip · 1–4 grade · ← → move
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