diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash15.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash15.java
index 43b44a5..db21bd1 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash15.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash15.java
@@ -47,11 +47,11 @@ public enum FCDotPIE9DDash15 implements FourCornerDotCollePie9 {
 	NXX_08('⊉'),
 	NXX_09('⊊'),
 	NXX_10('⊋'),
-	NXX_11(' '),
-	NXX_12(' '),
-	NXX_13(' '),
-	NXX_14(' '),
-	NXX_15(' '),
+	NXX_11('∪'),
+	NXX_12('∩'),
+	NXX_13('⋃'),
+	NXX_14('⋂'),
+	NXX_15('⍝'), // from APL
 	;
 	private final List<Integer> codePointDisplay;
 	
diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash21.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash21.java
index 6a9a155..f3177b4 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash21.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash21.java
@@ -57,7 +57,7 @@ public enum FCDotPIE9DDash21 implements FourCornerDotCollePie9 {
 	NXX_18('⍱'), // from APL
 	NXX_19('⍙'), // from APL
 	NXX_20('⍫'),  // from APL
-	NXX_21('⍝'), // from APL
+	NXX_21(' '),
 	;
 	private final List<Integer> codePointDisplay;
 	
diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7B.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7B.java
index 863f66f..767447c 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7B.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7B.java
@@ -104,9 +104,9 @@ public enum FCDotAPL0127DashP7B implements FourCornerDotColleZero33 {
 	/// SL730000
 	__IOTA(' '),
 	/// SL410000
-	DOWN_SHOE('∪'),
+	__DOWN_SHOE(' '),
 	/// SL400000
-	UP_SHOE('∩'),
+	__UP_SHOE(' '),
 	
 	;