val str = sc.textFile("README.md");

val withIndex = str.flatMap(x => x.split(" "))
	.filter(_ != "")
	.map(x => {if(x.charAt(x.length-1) == ',') x.slice(0, x.length-1) else x})
	.filter(_.length < 10).map((_,1))
	.reduceByKey(_ + _)
	.sortBy(_._2)
	.zipWithIndex();

val len = withIndex.collect.length;

withIndex.filter(x => x._2 > len - 6).map(_._1._1).collect();