ㄅㄧˇㄍㄨㄥbǐgōng

笔供
bǐgòngㄅㄧˇ ㄍㄨㄥˋ
  1. 受審招認書面供詞 筆供上畫簽字」。

written evidence, as opposed to oral evidence 口供[kou3 gong4]