Ei-Ko-Sei-Sui

rise and fall. ups and downs. vicissitudes.

kanji meaning :

• Ei = prosper. thrive. flourish. boom. (= Saka(-eru)).
  


• Ko = wither. die. (= Ka(-reru)).
  


• Sei = prosperous. flourishing. thriving. successful. active. energetic.
  vigorous. lively. enthusiastic. popular. (= Saka(-n)).
  


• Sui = become weaker. decline. get weak. die down.
  subside. abate. fail. (= Otoro(-eru)).