diff --git a/blns.txt b/blns.txt
index f9ae5dd..872f75d 100644
--- a/blns.txt
+++ b/blns.txt
@@ -29,6 +29,10 @@ $1.00
 0..0
 .
 0.0.0
+0,00
+0,,0
+,
+0,0,0
 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
 NaN
 Infinity