Radical ⼔ (21)

Shang (Shi-Bing)	Shang (Huang)	Middle W.Zhou	Qin	W.Han	E.Han	Nanbei (N.Wei)	Tang	Ming
合9746	合36751	集9898A	睡.封57	北.雨Z2	熹經282	南0091X	五經文字	字彙

{背} *m.pˤəks “turn the back on” ♪→ {北} *pˤək “north”

Depiction of two people (人) turning their backs on each other.

• 季旭昇 2014 - 說文新證 [2nd ed.] (651)

Shang (Bin)	Shang (Wuming)	Middle W.Zhou	Zhanguo (Chu)	Qin	E.Han	Ming
合6304	合30298	集2831	郭.六德32	里耶8-860	日本說文	字彙

? ♪→ {腦} *nˤ[u]ʔ “brain”

Depiction of a person holding an axe behing his back. The modern form is based on a form from Shuowen Jiezi.

• 陳劍 2004 - 郭店簡《六德》用爲“柔”之字考釋
• 鄔可晶 2018 - “夒”及有關諸字綜理