diff --git a/src/common_code/common_code.cc b/src/common_code/common_code.cc
index 709bdfe..6cef632 100644
--- a/src/common_code/common_code.cc
+++ b/src/common_code/common_code.cc
@@ -12,6 +12,10 @@ uint64_t CommonCode::unwrap() const { // get raw uint64_t code
     return code;
 }
 
+RawCode CommonCode::to_raw_code() const { // convert to raw code
+    return RawCode(*this);
+}
+
 ShortCode CommonCode::to_short_code() const { // convert to short code
     return ShortCode(*this);
 }
@@ -29,8 +33,12 @@ CommonCode::CommonCode(uint64_t common_code) {
     code = common_code;
 }
 
-CommonCode::CommonCode(const ShortCode &short_code) {
-    code = short_code.to_common_code().unwrap(); // init from short code
+CommonCode::CommonCode(const RawCode &raw_code) { // init from raw code
+    code = raw_code.to_common_code().code;
+}
+
+CommonCode::CommonCode(const ShortCode &short_code) { // init from short code
+    code = short_code.to_common_code().code;
 }
 
 CommonCode::CommonCode(const std::string &common_code_str) {
diff --git a/src/common_code/common_code.h b/src/common_code/common_code.h
index 928bb50..0f5cf6c 100644
--- a/src/common_code/common_code.h
+++ b/src/common_code/common_code.h
@@ -2,8 +2,10 @@
 
 #include <string>
 #include <cstdint>
+#include "raw_code.h"
 #include "short_code.h"
 
+class RawCode;
 class ShortCode;
 
 class CommonCode {
@@ -12,12 +14,12 @@ public:
     static bool check(uint64_t common_code);
     static CommonCode unsafe_create(uint64_t code);
 
-    // TODO: to raw code function
+    RawCode to_raw_code() const;
     ShortCode to_short_code() const;
     std::string to_string(bool shorten = false) const;
 
     explicit CommonCode(uint64_t common_code);
-    // TODO: init with const RawCode&
+    explicit CommonCode(const RawCode &raw_code);
     explicit CommonCode(const ShortCode &short_code);
     explicit CommonCode(const std::string &common_code_str);
 
diff --git a/src/main.cc b/src/main.cc
index 54dd94b..e5e098c 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -142,5 +142,7 @@ int main() {
 
     next_step(0x0E58FC85FFEBC4DB, 0); // mask unset
 
+    std::cout << CommonCode(RawCode(0x0E58FC85FFEBC4DB)).to_string() << std::endl;
+
     return 0;
 }
diff --git a/src/raw_code/raw_code.h b/src/raw_code/raw_code.h
index 5320ab5..d6c8037 100644
--- a/src/raw_code/raw_code.h
+++ b/src/raw_code/raw_code.h
@@ -20,6 +20,8 @@
 #define F_2x1 (uint64_t)0x7007 // 111 000 000 000 111
 #define F_2x2 (uint64_t)0x3F03F // 111 111 000 000 111 111
 
+class CommonCode;
+
 class RawCode {
 public:
     uint64_t unwrap() const;
@@ -31,5 +33,4 @@ public:
 
 private:
     uint64_t code;
-
 };