diff --git a/graph/VertexMarking.java b/graph/VertexMarking.java
new file mode 100644
index 0000000..cd6ce1f
--- /dev/null
+++ b/graph/VertexMarking.java
@@ -0,0 +1,4 @@
+package graph;
+
+public abstract class VertexMarking extends Marking{
+}