do right by vs incur

do right by

verb
  • To treat, deal with, or act toward (someone) in a morally just, socially honorable fashion. 

incur

verb
  • to bring upon oneself or expose oneself to, especially something inconvenient, harmful, or onerous; to become liable or subject to 

  • to render somebody liable or subject to 

How often have the words do right by and incur occurred in a corpus of books? (source: Google Ngram Viewer )