diff --git a/src/NodaUncertaintyHelper.php b/src/NodaUncertaintyHelper.php
index 298feaf..1ac6a35 100644
--- a/src/NodaUncertaintyHelper.php
+++ b/src/NodaUncertaintyHelper.php
@@ -66,8 +66,11 @@ final class NodaUncertaintyHelper {
         "ca ",
         "ca. ",
         "circa ",
+        "gegen ",
         "um ",
         "vermtl. ",
+        "vermutlich ",
+        "wohl ",
         "wohl um ",
     ];