diff --git a/dictsource/vi_rules b/dictsource/vi_rules
index 5aacfe6c..894a7abc 100644
--- a/dictsource/vi_rules
+++ b/dictsource/vi_rules
@@ -994,7 +994,7 @@ ỵ	ỵ
 
 .group u
         u          u
-        u (A       w
+        u (A       u
      A) u          w
         ui         uI
         uì         uI2
@@ -1030,7 +1030,8 @@ ỵ	ỵ
 
 .group ù
         ù          u2
-        ù (A       w2
+        ù (A       u2
+		ùy         ui2
         ùi         uI2
         ùa         u@2
 		//ùng        u#2
@@ -1042,7 +1043,8 @@ ỵ	ỵ
 
 .group ú
         ú          u3
-        ú (A       w3
+        ú (A       u3
+		úy		   ui3
         úi         uI3
         úa         u@3
 		//úng        u#3
@@ -1054,7 +1056,8 @@ ỵ	ỵ
 
 .group ủ
         ủ          u4
-        ủ (A       w4
+        ủ (A       u4
+		ủy  	   ui4
         ủi         uI4
         ủa         u@4
 		//ủng        u#4
@@ -1066,7 +1069,8 @@ ỵ	ỵ
 
 .group ũ
         ũ          u5
-        ũ (A       w5
+        ũ (A       u5
+		ũy         ui5
         ũi         uI5
         ũa         u@5
 		//ũng        u#5
@@ -1078,7 +1082,8 @@ ỵ	ỵ
 
 .group ụ
         ụ          u6
-        ụ (A       w6
+        ụ (A       u6
+		ụy         ui6
         ụi         uI6
         ụa         u@6
 		//ụng        u#6