go to shit vs suffer

go to shit

verb
  • To become much worse. 

  • To completely fail; to have no result. 

suffer

verb
  • To become worse. 

  • To undergo hardship. 

  • To feel pain. 

  • To endure, undergo. 

How often have the words go to shit and suffer occurred in a corpus of books? (source: Google Ngram Viewer )