Following are a number of back-translations as well as a sample translation for translators of Amos 6:12:

• Kupsabiny: “Do horses run on a rocky place that has been dug up?
  Does a person plough the ocean with oxen?
  Why have you turned truth/justice to become poison
  and overturned righteousness to be a bitter thing?” (Source: Kupsabiny Back Translation)
• Newari: “What! do horses run on rocky cliffs?
  What! Does anyone plow there with oxen?
  But you turn justice into poison
  and make the fruit of righteousness bitter.” (Source: Newari Back Translation)
• Hiligaynon: “Can- horses -run on the rocky cliff? Can- a cow -plow in the sea? Of course not! But you (plur.) created/made justice to harm a man/person, and what (is) righteous you (plur.) turned into evil/bad.” (Source: Hiligaynon Back Translation)
• English: “Horses certainly do not run on big rocks,
  and certainly people do not plow the sea with oxen.
  But you have done things that no one should do:
  You have distorted what is fair/right and caused it to be considered like poison ;
  you have changed what is right and consider it to be like things that are bitter.” (Source: Translation for Translators)