Following are a number of back-translations as well as a sample translation for translators of Isaiah 49:21:

• Kupsabiny: “Then, you shall say in your stomach,
  ‘Who is it that bore all these children for me?
  People died/were lost from me and I became barren.
  Some of my people were caught and driven to a country not their own.
  Who is it that brought all these children up?
  I was left alone,
  where are all these people coming from?’ ’” (Source: Kupsabiny Back Translation)
• Newari: “Then in your heart you will say like this,
  ‘Who gave birth for me to these children?
  I lost my children and could have no more.
  I was captured and taken away to another country,
  I was left alone.
  But where have all these children come from?
  Who raised them up?’"” (Source: Newari Back Translation)
• Hiligaynon: “Then you (sing.) will-say to yourselves, ‘Who bore them for me? Most of my people have-died, and because of this I mourned. Some of them were-taken-captives to other places, and I am alone now. Therefore where these (people) come-from? Who took-care of them?’ ’” (Source: Hiligaynon Back Translation)
• English: “Then you will think to yourselves ,
  ‘It is amazing that we have all these children!
  Most of our children were dead,
  and the rest were exiled.
  We were left here alone;
  so we do not know where all these children have come from!
  Who raised them?’ ’” (Source: Translation for Translators)