--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/marking2/docdiff_test2.scala	Fri Nov 30 14:13:11 2018 +0000
@@ -0,0 +1,5 @@
+
+
+assert(occurrences(List("a", "b", "b", "c", "d")) == Map("a" -> 1, "b" -> 2, "c" -> 1, "d" -> 1))
+
+assert(occurrences(List("d", "b", "d", "b", "d")) == Map("d" -> 3, "b" -> 2))