Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 2:12:

• Kupsabiny: “And as I wished to look at words/matters of wisdom and investigate madness and stupidness, I asked myself, ‘What has not been done that a king who will replace a previous one is going to do?’” (Source: Kupsabiny Back Translation)
• Newari: “So, for the sake of learning, I, the one who has wisdom, thought about
  what it is to go on behaving recklessly and becoming a fool.
  What more can a successor to the former king do than that one has already done?” (Source: Newari Back Translation)
• Hiligaynon: “What can- the succeeding kings -do? What else but what have-been-done already in past-time.
  I also tried to compare wisdom and foolishness.” (Source: Hiligaynon Back Translation)