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

• Kupsabiny: “he was tested to say ‘Shibboleth’. And if he said ‘Sibboleth’ because he could not say that word well, he was killed there at the river Jordan. Forty-two thousand people from the clan of Ephraim were killed there.” (Source: Kupsabiny Back Translation)
• Newari: “[Then] they would say, "Say ‘Shibboleth’!" If, being unable to say the word nicely, he said "Sibboleth," they would take him to the Jordan river crossing and kill him. At that time, they killed 42,000 men of Ephraim.” (Source: Newari Back Translation)
• Hiligaynon: “they have- him -say ‘Shibolet,’ for those (who) come-from-Efraim can- not -pronounce it. If what he indeed would-say, ‘Sibolet,’ they would-capture him immediately and kill there in the very place-that-(someone)-crosses-over of the River Jordan. And that time, 42,000 of those (who) come-from-Efraim died.” (Source: Hiligaynon Back Translation)
• English: “they would say to him, ‘Say the word ‘Shibboleth’.’ The men of Ephraim could not pronounce that word correctly. So if the person from the tribe of Ephraim said ‘Sibboleth’, they would know that he was lying and that he was really from the tribe of Ephraim, and they would kill him there at the ford.
  So the men of Gilead killed 42,000 people from the tribe of Ephraim at that time.” (Source: Translation for Translators)