bugger off vs forlet

bugger off

verb
  • To leave, go away, disappear. 

intj
  • Go away. 

  • An expression of disagreement or disbelief. 

forlet

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

  • To forget. 

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