diff --git a/regex_patterns/10bit-HDS.yml b/regex_patterns/10bit-HDS.yml
index fcdc18c..dfec5ba 100644
--- a/regex_patterns/10bit-HDS.yml
+++ b/regex_patterns/10bit-HDS.yml
@@ -1,6 +1,13 @@
 name: 10bit-HDS
 pattern: (?<=^|[\s.-])10bit-HDS\b
-description: ''
+description: 'Matches the release group `10bit-HDS` only if it is:
+
+
+  - Preceded by the start of the string (`^`), a whitespace character (`\s`), a period
+  (`.`), or a hyphen (`-`).
+
+  - Followed by a word boundary (`\b`), ensuring it ends cleanly without being part
+  of a longer word. '
 tags:
 - Release Group
-tests: null
+tests: []
diff --git a/regex_patterns/3D.yml b/regex_patterns/3D.yml
index 3faeec9..5fb3900 100644
--- a/regex_patterns/3D.yml
+++ b/regex_patterns/3D.yml
@@ -1,6 +1,12 @@
 name: 3D
 pattern: \b((bluray|bd)?3d|sbs|half[ .-]ou|half[ .-]sbs)\b
-description: ''
+description: 'Matches terms related to 3D video formats:
+
+  - `bluray3d` or `bd3d` (optional `bluray` or `bd` followed by `3d`).
+
+  - `sbs` (side-by-side).
+
+  - `half ou` or `half sbs` with space (` `), dot (`.`), or hyphen (`-`) as separators.'
 tags:
 - Enhancement
 - Unwanted
diff --git a/regex_patterns/4K4U.yml b/regex_patterns/4K4U.yml
index 9c6565b..f333f4b 100644
--- a/regex_patterns/4K4U.yml
+++ b/regex_patterns/4K4U.yml
@@ -1,6 +1,13 @@
 name: 4K4U
 pattern: (?<=^|[\s.-])4K4U\b
-description: ''
+description: 'Matches the release group `4K4U` only if it is:
+
+
+  - Preceded by the start of the string (`^`), a whitespace character (`\s`), a period
+  (`.`), or a hyphen (`-`).
+
+  - Followed by a word boundary (`\b`), ensuring it ends cleanly without being part
+  of a longer word. '
 tags:
 - Release Group
-tests: null
+tests: []