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0 Old HSK word(s):
Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.
Hsk Characters:
HSK -Characters and beyond:
Gb
Big5
Eng
Rad
Mega
Triple
Multilingual
from: Universala Vortaro, Zamenhof
Kleinsche Vierergruppe (S, Math)
[ke4 lai2 yin1 si4 yuan2 qun2]
克莱因四元群