倥

ko̅ng = ku + (e)ng1

ignorant / blank-minded

倥

kǒng = ku + (e)ng3

urgent / pressed

倥 character breakdown

倥
- 亻
  - 丨
  - 丿
- 空
  - 工
    - 丨
    - 二
      - 一
  - 穴
    - 八
      - 丿
      - ㇏
    - 宀
      - 丶
      - 冖

亻

rén = r + (e)n2

"person" radical in Chinese characters (Kangxi radical 9)

亻 = 丿 + 丨 : Mnemonic symbol: Rosa Luxemburg. She's quite radical, and her name starts with "r", just like "ren2". Also, 亻appears at the left-hand side of characters, and Rosa is a leftist as well.

Robinson Crusoe (r) and Rosa Luxemburg (亻) are having their favorite snacks in the encampment's kitchen: Rosa is eating a banana (丿) and Robinson is eating a dinosaur bone (丨).

空

ko̅ng = ku + (e)ng1

empty / air / sky / in vain

空 = 工 + 穴 : Mnemonic symbol: an air conditioner

空 = 工 + 穴 : In front of the engine, Karl Koala found some very special cave paintings. Using steel beams he constructs a protective cover. He also installs air conditioning to make the best environment possible to preserve the cave paintings.

空

kòng = ku + (e)ng4

to empty / vacant / unoccupied / space / leisure / free time