forlet vs lose sight of

forlet

verb
  • To forget. 

  • To abandon; give up; leave; leave behind; forsake; desert; neglect. 

lose sight of

verb
  • To fail to remember; to overlook or neglect. 

  • To be no longer able to see. 

How often have the words forlet and lose sight of occurred in a corpus of books? (source: Google Ngram Viewer )