text: function solve(input) {
      let capitalWords = [];
      let strArr = input.join(",").split(/\W+/).filter(x => x.length > 0);
      for (let i = 0; i < strArr.length; i++) {
          let capString = strArr[i].toUpperCase();
          if(capString == strArr[i]){
              capitalWords.push(strArr[i])
          }
      }
      console.log(capitalWords.join(", "));
  }
  
  solve(["We start by HTML, CSS, JavaScript, JSON and REST.",
      "Later we touch some PHP, MySQL and SQL." ,
      "Later we play with C#, EF, SQL Server and ASP.NET MVC." ,
      "Finally, we touch some Java, Hibernate and Spring.MVC."]);