diff --git a/src/applications/maniphest/field/parser/__tests__/ManiphestCustomFieldStatusParserTestCase.php b/src/applications/maniphest/field/parser/__tests__/ManiphestCustomFieldStatusParserTestCase.php
--- a/src/applications/maniphest/field/parser/__tests__/ManiphestCustomFieldStatusParserTestCase.php
+++ b/src/applications/maniphest/field/parser/__tests__/ManiphestCustomFieldStatusParserTestCase.php
@@ -60,6 +60,16 @@
           'offset' => 0,
         ),
       ),
+      'Fixes T123, T456, and T789.' => array(
+        array(
+          'match' => 'Fixes T123, T456, and T789.',
+          'prefix' => 'Fixes',
+          'infix' => '',
+          'monograms' => array('T123', 'T456', 'T789'),
+          'suffix' => '',
+          'offset' => 0,
+        ),
+      ),
     );
 
     foreach ($map as $input => $expect) {
diff --git a/src/infrastructure/customfield/parser/PhabricatorCustomFieldMonogramParser.php b/src/infrastructure/customfield/parser/PhabricatorCustomFieldMonogramParser.php
--- a/src/infrastructure/customfield/parser/PhabricatorCustomFieldMonogramParser.php
+++ b/src/infrastructure/customfield/parser/PhabricatorCustomFieldMonogramParser.php
@@ -24,7 +24,7 @@
       '(?:^|\b)'.
       $prefix_regex.
       $infix_regex.
-      '((?:'.$monogram_pattern.'[,\s]*)+)'.
+      '((?:(and\s+)?'.$monogram_pattern.'[,\s]*)+)'.
       $suffix_regex.
       '(?:$|\b)'.
       '/';