diff --git a/8By8/8By8.ino b/8By8/8By8.ino
index 8f949ce..ae96887 100644
--- a/8By8/8By8.ino
+++ b/8By8/8By8.ino
@@ -31,7 +31,7 @@ const uint16_t numbers[10] = {
 
 // 8 width, 7 height
 
-const uint64_t letters[26]{
+const uint64_t letters[]{
     0x3C66667E666666, // A
     0x7C66667C66667C, // B
     0x3C66606060663C, // C
@@ -58,6 +58,16 @@ const uint64_t letters[26]{
     0x6363361C366363, // X
     0x6666663C181818, // Y
     0x7E060C1830607E, // Z
+    0x3C666E7666663C, // 0
+    0x1818381818187E, // 1
+    0x3C66060C30607E, // 2
+    0x3C66061C06663C, // 3
+    0x0C1C2C4C7E0C0C, // 4
+    0x7E607C0606663C, // 5
+    0x3C66607C66663C, // 6
+    0x7E660C0C181818, // 7
+    0x3C66663C66663C, // 8
+    0x3C66663E06663C, // 9
 };
 
 struct Triple {
@@ -421,14 +431,14 @@ public:
         // 1 = look reverse x
         // 2 = look along y
         // 3 = look reverse y
-        if (num > 25 || num < 0) {
+        if (num >= sizeof(letters) || num < 0) {
             return;
         }
         switch (direction) {
         case 0: {
             for (int i = 0; i < 8; i++) {
                 for (int j = 0; j < 7; j++) {
-                    if ((numbers[num] >> (55 - (i + j * 8))) & 1) {
+                    if ((letters[num] >> (55 - (i + j * 8))) & 1) {
                         Cube::set_status(x, y - i, z - j, brightness);
                     }
                     else {
@@ -441,7 +451,7 @@ public:
         case 1: {
             for (int i = 0; i < 8; i++) {
                 for (int j = 0; j < 7; j++) {
-                    if ((numbers[num] >> (55 - (i + j * 8))) & 1) {
+                    if ((letters[num] >> (55 - (i + j * 8))) & 1) {
                         Cube::set_status(x, y + i, z - j, brightness);
                     }
                     else {
@@ -454,7 +464,7 @@ public:
         case 2: {
             for (int i = 0; i < 8; i++) {
                 for (int j = 0; j < 7; j++) {
-                    if ((numbers[num] >> (55 - (i + j * 8))) & 1) {
+                    if ((letters[num] >> (55 - (i + j * 8))) & 1) {
                         Cube::set_status(x + i, y, z - j, brightness);
                     }
                     else {
@@ -467,7 +477,7 @@ public:
         case 3: {
             for (int i = 0; i < 8; i++) {
                 for (int j = 0; j < 7; j++) {
-                    if ((numbers[num] >> (55 - (i + j * 8))) & 1) {
+                    if ((letters[num] >> (55 - (i + j * 8))) & 1) {
                         Cube::set_status(x - i, y, z - j, brightness);
                     }
                     else {
@@ -874,7 +884,7 @@ byte cube_step = 1;
 
 bool rain_create_new = false;
 
-String display_string = "";
+String display_string = "MUELSYSE";
 int letter_create_layer_count = 0;
 // When count to 7, it's time to draw the new letter.
 int next_char_ptr = 0;
@@ -1101,11 +1111,14 @@ void words() {
     if (Serial.available()) {
         byte input_char = Serial.read();
         if (input_char >= 'A' && input_char <= 'Z') {
-            display_string.concat(input_char);
+            display_string.concat((char)input_char);
         }
 
         if (input_char >= 'a' && input_char <= 'z') {
-            display_string.concat(input_char - 'a' + 'A');
+            display_string.concat((char)(input_char - 'a' + 'A'));
+        }
+        if (input_char >= '0' && input_char <= '9') {
+            display_string.concat((char)input_char);
         }
 
         if (input_char == '?') {
@@ -1114,6 +1127,8 @@ void words() {
         }
 
         if (input_char == '/') {
+            display_string = "";
+            next_char_ptr = 0;
             Serial.println("Cleared input.");
         }
     }
@@ -1130,7 +1145,7 @@ void words() {
 
     letter_create_layer_count++;
 
-    if (letter_create_layer_count < 7 ) {
+    if (letter_create_layer_count < 7) {
         // The previous have not been moved out
         return;
     }
@@ -1143,7 +1158,14 @@ void words() {
         return;
     }
 
-    Cube::draw_letter(1, 7, 7, display_string[next_char_ptr] - 'A', 2, 3);
+    if (display_string[next_char_ptr] >= 'A') {
+        Cube::draw_letter(0, 7, 7, display_string[next_char_ptr] - 'A', 2, 3);
+    }
+    else {
+        Serial.print(display_string[next_char_ptr]);
+        Cube::draw_letter(0, 7, 7, display_string[next_char_ptr] - '0' + 26, 2, 3);
+    }
+
     next_char_ptr++;
 }