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Iwate prefecture (Tohoku area)Year 2021
Miyagi prefecture (Tohoku area)September 2019
Hokkaido (northernmost of the four main islands of Japan)October 2020
Ibaraki prefecture (Kantou area)December 2018
Yamanashi prefecture (Chuubu area)August 2020
Yamanashi prefecture (Chuubu area)2017
Miyagi prefecture (Tohoku area)2015
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