diff --git a/scripts/combinations.py b/scripts/combinations.py
new file mode 100644
index 0000000000000000000000000000000000000000..8186da1ab9a65d7d42fee64f93350f57c2e5b77a
--- /dev/null
+++ b/scripts/combinations.py
@@ -0,0 +1,8 @@
+import itertools
+import re
+l = ['A', 'S', 'U', 'T']
+mask = ''.join(reversed(l))
+for i in range(1,len(l)+1):
+    for comb in itertools.combinations(l, i):
+        reg = "[^%s]" % ''.join(comb)
+        print re.sub(reg,"-", mask)