diff --git a/src/main.cc b/src/main.cc
index cbfcb8f..9360703 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -127,11 +127,15 @@ int main() {
 //    std::cout << CommonCode(0x6EC0F8800).to_short_code().to_string() << std::endl;
 
 
-    auto r = RawCode(0x0E58FC85FFEBC4DB);
-    printf("%015lX\n", r.unwrap());
+//    auto r = RawCode(0x0E58FC85FFEBC4DB);
+//    printf("%015lX\n", r.unwrap());
+//
+//    std::cout << r.to_common_code().to_string() << std::endl;
+//    printf("%015lX\n", RawCode(CommonCode(0x4FEA13400)).unwrap());
 
-    std::cout << r.to_common_code().to_string() << std::endl;
-    printf("%015lX\n", RawCode(CommonCode(0x4FEA13400)).unwrap());
+//    auto r = RawCode(0x0E58FC85FFEBC4DB);
+    auto r = RawCode(0x0E58FC85FFEBC4DD);
+    std::cout << r.dump_case() << std::endl;
 
     return 0;
 }
diff --git a/src/raw_code/raw_code.cc b/src/raw_code/raw_code.cc
index 46c2450..b2adb69 100644
--- a/src/raw_code/raw_code.cc
+++ b/src/raw_code/raw_code.cc
@@ -1,3 +1,4 @@
+#include <string>
 #include "common.h"
 #include "raw_code.h"
 
@@ -67,3 +68,43 @@ RawCode::RawCode(const CommonCode &common_code) {
         }
     }
 }
+
+std::string RawCode::dump_case() const {
+
+    // TODO: result reserve space -> result length
+    std::string result;
+
+    auto raw_code = code;
+
+    for (int addr = 0; raw_code; ++addr, raw_code >>= 3) {
+        switch (raw_code & 0b111) {
+            case B_space:
+                result.push_back('.');
+                break;
+            case B_fill:
+                result.push_back('+');
+                break;
+            case B_1x1:
+                result.push_back('*');
+                break;
+            case B_1x2:
+                result.push_back('~');
+                break;
+            case B_2x1:
+                result.push_back('|');
+                break;
+            case B_2x2:
+                result.push_back('@');
+                break;
+            default:
+                result.push_back('?');
+        }
+        if (addr % 4 == 3) {
+            result.push_back('\n');
+        } else {
+            result.push_back(' ');
+        }
+    }
+
+    return result;
+}
diff --git a/src/raw_code/raw_code.h b/src/raw_code/raw_code.h
index ac12850..04503fd 100644
--- a/src/raw_code/raw_code.h
+++ b/src/raw_code/raw_code.h
@@ -26,8 +26,7 @@ public:
     std::string dump_case() const;
     CommonCode to_common_code() const;
 
-    RawCode(const CommonCode &common_code);
-
+    explicit RawCode(const CommonCode &common_code);
     explicit RawCode(uint64_t raw_code) : code(raw_code) {}
 
 private: