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Names and idioms with total stroke of 18:
  語中  兔子尾  小根田  田島山  

Names and idioms similar to 億か:
億岐  三千億  億貞  数億円  億泰  

Check stroke order for the words below:
残り  築盛町  道府県  鳴滝宇多野谷  見勢本  咸鏡道  現状打破    大帽子花