/*
  Scope
  - Lexical Scope

  Search
  - Execution Context
  - Lexical Environment
*/

function parent() {
  let a = 10;

  function child() {
    console.log(a);
    console.log(`From Child ${b}`);

    function grand() {
      let b = 100;
      console.log(`From Grand ${a}`);
      console.log(`From Grand ${b}`);
    }
    grand();
  }
  child();
}
parent();