at long last vs somewhere

at long last

prep

  • at last 

somewhere

noun

  • Unspecified or unknown (unlocated) place or location. 

adv

  • In an uncertain or unspecified location. 

  • To an uncertain or unspecified location. 

  • At some unspecified point. 

How often have the words at long last and somewhere occurred in a corpus of books? (source: Google Ngram Viewer )