Following are a number of back-translations as well as a sample translation for translators of Jeremiah 8:12:

• Kupsabiny: “So were they ashamed
  over those despicable acts?
  No, they feel no shame at all.
  They do not even know how people feel shame.
  So/Therefore, they shall also fall like those who fell.
  All those people shall be destroyed
  when I punish them.
  The one speaking is I God.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “Are- they -ashamed of their shameful behavior? No! For they have no shame at-all! They no longer blush. Therefore I, the LORD, is-saying that they will-be-destroyed like the others. They will-be-put-down at the time that they will-be-punished.” (Source: Hiligaynon Back Translation)
• English: “They should be ashamed when they do disgusting things ,
  but they do not even know how to show on their faces that they are ashamed about their sins.
  So, they will be killed, and their corpses also will lie among the corpses of others who have been slaughtered by their enemies.
  They will be killed when I punish them.” (Source: Translation for Translators)