Etymology and distribution of 久保形.
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| Whole Japan | Prefectures | |
|---|---|---|
| レベル | 2 |
1 Chiba-ken(About 10) 2 Toukyou-to(Very rare) |
| Population | About 10 | |
| Ranking | Out of ranking | |
| Rank by city |
|---|
|
1 Katori-shi(About 10) 2 Katsushika-ku(Very rare) |
| Rank by subregion |
|---|
| Whole Japan | Prefectures | |
|---|---|---|
| Ratios | Very rare |
1 Chiba-ken(0.000176%) 2 Toukyou-to(Very rare) |
| Rank by city |
|---|
|
1 Katori-shi(0.00942%) 2 Katsushika-ku(0.00136%) |
| Rank by subregion |
|---|
