Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 7:15:

• Kupsabiny: “In this my useless life,
  I have seen a righteous person and he died early,
  together with a person whose sin goes on for many years.” (Source: Kupsabiny Back Translation)
• Newari: “In this meaningless life I have seen these two things:
  A righteous person who is destroyed in his righteousness,
  and an evil person who, however, keeps on living for many years, doing his evil work.” (Source: Newari Back Translation)
• Hiligaynon: “In this life of mine that has no value, I have-seen all this: the righteous who are-dying in spite of their righteous life and the wicked who are-living long in spite of their wicked life.” (Source: Hiligaynon Back Translation)
• English: “During all the time that I have been alive I have seen a lot of things that seem senseless.
  I have seen righteous people die while they are still young,
  and I have seen wicked people remain alive for a very long time
  in spite of their continuing to be wicked.” (Source: Translation for Translators)