diff --git a/blns.txt b/blns.txt
index b13a9c8..902a4ca 100644
--- a/blns.txt
+++ b/blns.txt
@@ -33,6 +33,8 @@ $1.00
 0,,0
 ,
 0,0,0
+--1
+-
 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
 NaN
 Infinity