diff --git a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerUnicodeDisplay.java b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerUnicodeDisplay.java
index e4f791f..09d9fbc 100644
--- a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerUnicodeDisplay.java
+++ b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerUnicodeDisplay.java
@@ -162,11 +162,15 @@ public class FourCornerUnicodeDisplay {
 	
 	public void renderFromInt18(List<Integer> chars, StringBuilder buf) {
 		Iterator<Integer> cdc = chars.iterator();
+		Integer numberModeLarge = null;
 		Integer numberMode = null;
 		boolean numberPIE = true;
 		boolean prevWord = false;
 		while (cdc.hasNext()) {
 			Integer cdcPoint = cdc.next();
+			if (numberModeLarge != null && cdcPoint <= FourCornerDotCake.FC_NCR1632_1V.getStart() && cdcPoint >= FourCornerDotCake.FC_NCR1632_1V.getStop()) {
+				numberModeLarge = null;
+			}
 			if (cdcPoint >= FourCornerDotCake.FC_DEC1604_P7.getStart() && cdcPoint <= FourCornerDotCake.FC_DEC1604_P7.getStop()) {
 				Integer decPoint = cdcPoint - FourCornerDotCake.FC_DEC1604_P7.getLength();
 				FCDotDEC1604DashP7 decCode = FCDotDEC1604DashP7.indexOf(decPoint);
@@ -223,6 +227,30 @@ public class FourCornerUnicodeDisplay {
 					numberMode = null; // disable lookup
 				}
 			}
+			if (cdcPoint >= FourCornerDotCake.FC_NCR1632_1T.getStart() && cdcPoint <= FourCornerDotCake.FC_NCR1632_1T.getStop()) {
+				numberModeLarge = cdcPoint - FourCornerDotCake.FC_NCR1632_1T.getStart();
+				continue;
+			}
+			if (numberModeLarge != null) {
+				int terminatorOffOne = numberModeLarge + 1;
+				int numberIdxOffOne = cdcPoint - FourCornerDotCake.FC_NCR1632_1V.getStart() + 1;
+				if (numberIdxOffOne > 0) {
+					List<Integer> math = new ArrayList<>();
+					FCDotPIE9CDash20.toScriptSuper(numberIdxOffOne).forEach(v -> {
+						for (int chr : v.cakePoints()) {
+							math.add(chr);
+						}
+					});
+					math.add(FCDotCDC1604DashP6.BAR_V_RIGHT.ordinal());
+					FCDotPIE9CDash20.toScriptSub(terminatorOffOne).forEach(v -> {
+						for (int chr : v.cakePoints()) {
+							math.add(chr);
+						}
+					});
+					renderFromInt18(math, buf);
+					continue;
+				}
+			}
 			
 			if (numberMode != null) {
 				if (numberPIE) {
diff --git a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash0M.java b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash0M.java
index f95ce8d..798c4c3 100644
--- a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash0M.java
+++ b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash0M.java
@@ -546,8 +546,12 @@ public enum FCDotNCR1632Dash0M implements FourCornerX18CakePoints {
 	NXX_512,
 	;
 	
+	public int cakePoint() {
+		return FourCornerDotCake.FC_NCR1632_0M.getStart() + ordinal();
+	}
+	
 	@Override
 	public int[] cakePoints() {
-		return new int[] {FourCornerDotCake.FC_NCR1632_0M.getStart() + ordinal()};
+		return new int[] {cakePoint()};
 	}
 }
diff --git a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash1T.java b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash1T.java
index 6671b57..ada1bbf 100644
--- a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash1T.java
+++ b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash1T.java
@@ -546,8 +546,12 @@ public enum FCDotNCR1632Dash1T implements FourCornerX18CakePoints {
 	NXX_512,
 	;
 	
+	public int cakePoint() {
+		return FourCornerDotCake.FC_NCR1632_1T.getStart() + ordinal();
+	}
+	
 	@Override
 	public int[] cakePoints() {
-		return new int[] {FourCornerDotCake.FC_NCR1632_1T.getStart() + ordinal()};
+		return new int[] {cakePoint()};
 	}
 }
diff --git a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash1V.java b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash1V.java
index dd5d804..ad60bcc 100644
--- a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash1V.java
+++ b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zero33/FCDotNCR1632Dash1V.java
@@ -546,8 +546,12 @@ public enum FCDotNCR1632Dash1V implements FourCornerX18CakePoints {
 	NXX_512,
 	;
 	
+	public int cakePoint() {
+		return FourCornerDotCake.FC_NCR1632_1V.getStart() + ordinal();
+	}
+	
 	@Override
 	public int[] cakePoints() {
-		return new int[] {FourCornerDotCake.FC_NCR1632_1V.getStart() + ordinal()};
+		return new int[] {cakePoint()};
 	}
 }
diff --git a/nx01-x4o-o2o/src/test/java/org/x4o/o2o/fc18/FourCornerUnicodeDisplayTest.java b/nx01-x4o-o2o/src/test/java/org/x4o/o2o/fc18/FourCornerUnicodeDisplayTest.java
index a411b75..e2197a4 100644
--- a/nx01-x4o-o2o/src/test/java/org/x4o/o2o/fc18/FourCornerUnicodeDisplayTest.java
+++ b/nx01-x4o-o2o/src/test/java/org/x4o/o2o/fc18/FourCornerUnicodeDisplayTest.java
@@ -30,6 +30,9 @@ import org.junit.jupiter.api.Test;
 import org.x4o.o2o.fc18.pie9c.FCDotPIE9CDash26;
 import org.x4o.o2o.fc18.zero33.FCDotCDC1604DashP6;
 import org.x4o.o2o.fc18.zero33.FCDotDEC1604DashP7;
+import org.x4o.o2o.fc18.zero33.FCDotNCR1632Dash0M;
+import org.x4o.o2o.fc18.zero33.FCDotNCR1632Dash1T;
+import org.x4o.o2o.fc18.zero33.FCDotNCR1632Dash1V;
 
 /**
  * Tests four corner displayed as unicode.
@@ -58,6 +61,40 @@ public class FourCornerUnicodeDisplayTest {
 		Assertions.assertEquals("X=␂ONEGOD;\n", FourCornerUnicodeDisplay.raw().renderFromX06(cdc));
 	}
 	
+	@Test
+	public void testPINLarge() throws Exception {
+		List<Integer> cdc = new ArrayList<>();
+		cdc.add(FCDotCDC1604DashP6.NX24_X.ordinal()); // = X
+		cdc.add(FCDotCDC1604DashP6.EQUALS.ordinal());
+		cdc.add(FourCornerDotCake.FC_NCR1632_1T.getStart()); // T011
+		cdc.add(FourCornerDotCake.FC_NCR1632_1V.getStart()); // NXX_011
+		cdc.add(FourCornerDotCake.FC_NCR1632_1T.getStart() - 1 + 15); // T015
+		cdc.add(FourCornerDotCake.FC_NCR1632_1V.getStart() - 1 + 14); // NXX_014
+		cdc.add(FCDotNCR1632Dash1T.NXX_456.cakePoint()); // T456
+		cdc.add(FCDotNCR1632Dash1V.NXX_123.cakePoint()); // NXX_123
+		cdc.add(FCDotNCR1632Dash1V.NXX_004.cakePoint()); // NXX_004
+		cdc.add(FCDotCDC1604DashP6.SEMICOLON.ordinal());
+		cdc.add(FCDotCDC1604DashP6._LINE.ordinal());
+		
+		Assertions.assertEquals("X=¹/₁¹⁴/₁₅¹²³/₄₅₆⁴/₄₅₆;\n", FourCornerUnicodeDisplay.text().renderFromInt18(cdc));
+	}
+	
+	@Test
+	public void testPINLargest() throws Exception {
+		List<Integer> cdc = new ArrayList<>();
+		cdc.add(FCDotCDC1604DashP6.NX24_X.ordinal()); // = X
+		cdc.add(FCDotCDC1604DashP6.EQUALS.ordinal());
+		cdc.add(FCDotNCR1632Dash0M.NXX_001.cakePoint()); // block size of 1T and 1V are x1 to x512
+		cdc.add(FCDotNCR1632Dash1T.NXX_456.cakePoint()); // T456
+		cdc.add(FCDotNCR1632Dash1V.NXX_123.cakePoint()); // NXX_123
+		cdc.add(FCDotNCR1632Dash1V.NXX_004.cakePoint()); // NXX_004
+		cdc.add(FCDotCDC1604DashP6.SEMICOLON.ordinal());
+		cdc.add(FCDotCDC1604DashP6._LINE.ordinal());
+		
+		// TODO: add support
+		//Assertions.assertEquals("X=¹²³/₄₅₆⁴/₄₅₆;\n", FourCornerUnicodeDisplay.text().renderFromInt18(cdc));
+	}
+	
 	@Test
 	public void testMixedCasing() throws Exception {
 		List<FourCornerX06BaklavaPoints> cdc = new ArrayList<>();