Following are a number of back-translations as well as a sample translation for translators of Isaiah 26:12:

• Kupsabiny: “Give us growth/prosperity, oh, God,
  because you are the one who gives us progress in everything.” (Source: Kupsabiny Back Translation)
• Newari: “O LORD, you have given us happiness [and] peace,
  All that we have completed
  you have done for us.” (Source: Newari Back Translation)
• Hiligaynon: “‘LORD, you (sing.) give us (excl.) good situation. For all we (excl.) have accomplished we (excl.) have done because of your (sing.) help.” (Source: Hiligaynon Back Translation)
• English: “Yahweh, we desire that you will allow things to go well for us;
  everything that we have done is what you have enabled us to do.” (Source: Translation for Translators)