Following are a number of back-translations as well as a sample translation for translators of Jeremiah 2:21:

• Kupsabiny: “I planted you like a vine tree is planted
  which was good and chosen.
  But see now how you are!
  You are now worthless like a vine of the bush.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “I planted you (plur.) like a very[intensifier] fine/[lit. good] kind of grape. But how (did) you (plur.) became a rotten and worthless grape?” (Source: Hiligaynon Back Translation)