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

• Kupsabiny: “A sinner covets/desires things taken by force,
  but the righteous people eat/enjoy what (they) have spent their strength/energy (to get).” (Source: Kupsabiny Back Translation)
• Newari: “Evil people envy the property
  that bad people steal.
  But the righteous
  will be like a tree with strong roots.” (Source: Newari Back Translation)
• Hiligaynon: “The wicked person always does what is bad, therefore their situation is not firm/stable, but the righteous on-the-other-hand are firm/stable like a tree with a deep root.” (Source: Hiligaynon Back Translation)
• Kankanaey: “The cruel/malicious are-greedy-for what they are-able-to-obtain by evil strategies, but the righteous/just, he-can-be-compared to a tree that fruits whose roots are firm/sturdy.” (Source: Kankanaey Back Translation)
• English: “Wicked people desire to take away what other evil people have,
  but Yahweh enables righteous/godly people to be steadfast and productive.” (Source: Translation for Translators)