chalk out vs contrive

chalk out

verb
  • to make (plans); to sketch 

  • Of a multi-race wager, to lose to the favorite in all of the remaining races. 

  • To draw or write down using chalk 

contrive

verb
  • To invent, to make devices; to form designs especially by improvisation. 

  • To project, cast, or set forth, as in a projection of light. 

  • To invent by an exercise of ingenuity; to devise 

How often have the words chalk out and contrive occurred in a corpus of books? (source: Google Ngram Viewer )