Recent fieldwork reveals that there are at least three mutually unintelligible languages falling under the E16/E17/E18/E19/E20/E21/E22/E23/E24/E25/E26/E27 Biao [byk] entry, which may be divided as Shidong Biao, Yonggu Biao and Dagang-Baoshan-Liangcun Biao. Two entries are thus missing from E16/E17/E18/E19/E20/E21/E22/E23/E24/E25/E26/E27 ( Andrew C. Hsiu 2013 ). See also: Shidong Biao [byk].