diff --git a/src/game/lib/util/string_util.js b/src/game/lib/util/string_util.js
index 09d1852..b61730d 100644
--- a/src/game/lib/util/string_util.js
+++ b/src/game/lib/util/string_util.js
@@ -134,6 +134,9 @@ StringUtil.isMultiAlphabetJungsung = function(alphabet) {
 };
 
 StringUtil.getMultiAlphabetFromJungsung = function(alphabet) {
+	if(!StringUtil.isMultiAlphabetJungsung(alphabet))
+		return alphabet;
+
 	var multiJungsungList = new Object();
 	multiJungsungList['ㅘ'] = ['ㅗ', 'ㅏ'];
 	multiJungsungList['ㅙ'] = ['ㅗ', 'ㅐ'];
@@ -157,6 +160,9 @@ StringUtil.isMultiAlphabetJongsung = function(alphabet) {
 };
 
 StringUtil.getMultiAlphabetFromJongsung = function(alphabet) {
+	if(!StringUtil.isMultiAlphabetJongsung(alphabet))
+		return alphabet;
+
 	var multiJongsungList = new Object();
 	multiJongsungList['ㄲ'] = ['ㄱ', 'ㄱ'];
 	multiJongsungList['ㄳ'] = ['ㄱ', 'ㅅ'];
diff --git a/src/game/typing/test/game.js b/src/game/typing/test/game.js
index 03ab692..d36b5c2 100644
--- a/src/game/typing/test/game.js
+++ b/src/game/typing/test/game.js
@@ -234,7 +234,7 @@ var TypingTest = {
 		var typingTextMan = new TypingTextManager();
 
 		var typingPracticeContents = this.getTypingTestContents();
-		var typingPracticeContents = [ "십년이면 강산도 변한다." , "십년이면 강산도 변한다.", "십년이면 강산도 변한다." ];	// for debug
+		// var typingPracticeContents = [ "십년이면 강산도 변한다." , "십년이면 강산도 변한다.", "십년이면 강산도 변한다." ];	// for debug
 		// var typingPracticeContents = [ "꿰뚫다" , "워머신", "홧김에" ];	// for debug
 		// console.log(typingPracticeContents);
 		typingTextMan.makeTestContents(typingPracticeContents);
@@ -386,16 +386,16 @@ var TypingTest = {
 
 		if(event.keyCode == Phaser.Keyboard.ENTER ||
 			event.keyCode == Phaser.Keyboard.SPACEBAR) {
-			console.log("### enter ###");
-			console.log("this.typingIndex : " + this.typingIndex);
-			console.log("inputContent : " + inputContent);
-			console.log("typingContent : " + typingContent);
+			// console.log("### enter ###");
+			// console.log("this.typingIndex : " + this.typingIndex);
+			// console.log("inputContent : " + inputContent);
+			// console.log("typingContent : " + typingContent);
 
 			if(inputContent === typingContent) {
 				this.calculateTypingRecord(typingContent);
 
-				console.log("this.typingIndex : " + this.typingIndex);
-				console.log("this.typingContentLength : " + this.typingContentLength);
+				// console.log("this.typingIndex : " + this.typingIndex);
+				// console.log("this.typingContentLength : " + this.typingContentLength);
 				if(this.typingIndex == this.typingContentLength - 1) {
 					this.isGameOver = true;
 					this.gameOver();
@@ -495,10 +495,10 @@ var TypingTest = {
 				var typingLetter = "";
 				var typingNextLetter = "";
 
-				console.log("-----");
-				console.log("inputConent : '" + inputContent + "'");
-				console.log("inputIndex : " + inputIndex);
-				console.log("misspelledIndex : " + misspelledIndex);
+				// console.log("-----");
+				// console.log("inputConent : '" + inputContent + "'");
+				// console.log("inputIndex : " + inputIndex);
+				// console.log("misspelledIndex : " + misspelledIndex);
 
 				if(inputIndex < 0)
 					inputLetter = "";
@@ -510,9 +510,9 @@ var TypingTest = {
 				if(misspelledIndex <= typingContent.length)
 					typingNextLetter = typingContent[misspelledIndex + 1];
 
-				console.log("inputLetter : '" + inputLetter + "'");
-				console.log("typingLetter : '" + typingLetter + "'");
-				console.log("typingNextLetter : '" + typingNextLetter + "'");
+				// console.log("inputLetter : '" + inputLetter + "'");
+				// console.log("typingLetter : '" + typingLetter + "'");
+				// console.log("typingNextLetter : '" + typingNextLetter + "'");
 
 				// var typingAlphabet = "";
 				var inputLetterAlphabets = StringUtil.toKoreanAlphabets(inputLetter);
@@ -626,6 +626,7 @@ var TypingTest = {
 
 					// 입력할 글자에 종성이 있을 경우
 					else if(StringUtil.hasJongsung(typingLetter)) {
+						console.log("has jongsung");
 						var typingLetterJongsung = StringUtil.jongsung(typingLetter);
 
 						// 입력한 글자의 종성과 입력할 글자의 종성이 같은 경우
@@ -633,10 +634,11 @@ var TypingTest = {
 							highlightKey = StringUtil.chosung(typingNextLetter);
 						// 입력한 글자의 종성이 입력할 글자와 다를 경우
 						else {
-							var inputJongsungAlphabets = StringUtil.getMultiAlphabetFromJongsung(StringUtil.jongsung(inputLetter));
-							var typingJongsungAlphabets = StringUtil.getMultiAlphabetFromJongsung(StringUtil.jongsung(typingLetter));
 							// 입력할 글자의 종성이 합성자음일 경우
 							if(StringUtil.isMultiAlphabetJongsung(typingLetterJongsung)) {
+								var inputJongsungAlphabets = StringUtil.getMultiAlphabetFromJongsung(StringUtil.jongsung(inputLetter));
+								var typingJongsungAlphabets = StringUtil.getMultiAlphabetFromJongsung(StringUtil.jongsung(typingLetter));
+
 								// 입력할 글자의 종성과 입력한 글자의 종성이 같은 경우
 								if(typingLetterJongsung == StringUtil.jongsung(inputLetter))
 									highlightKey = StringUtil.chosung(typingNextLetter);
@@ -647,12 +649,23 @@ var TypingTest = {
 							}
 							// 입력할 글자의 종성이 단자음일 경우 : 알바 -> 앏
 							else {
-								if(StringUtil.jongsung(typingLetter) == inputJongsungAlphabets[0] && StringUtil.chosung(typingNextLetter) == inputJongsungAlphabets[1])
-									highlightKey = StringUtil.jungsung(typingNextLetter);
-								// else if(StringUtil.jongsung(inputLetter) == inputJongsungAlphabets[0])
-								// 	highlightKey = inputJongsungAlphabets[1];
-								else
-									highlightKey = "Backspace";
+								var inputLetterJongsung = StringUtil.jongsung(inputLetter);
+								// console.log("*** single jongsung");
+								// console.log("inputLetter : " + inputLetter);
+								// console.log("StringUtil.jongsung(inputLetter) : " + StringUtil.jongsung(inputLetter));
+								// console.log("inputLetterJongsung : " + inputLetterJongsung);
+
+								if(StringUtil.isMultiAlphabetJongsung(inputLetterJongsung)) {
+									var inputJongsungAlphabets = StringUtil.getMultiAlphabetFromJongsung(StringUtil.jongsung(inputLetter));
+									// console.log("inputJongsungAlphabets : " + inputJongsungAlphabets);
+									if(StringUtil.jongsung(typingLetter) == inputJongsungAlphabets[0] && StringUtil.chosung(typingNextLetter) == inputJongsungAlphabets[1])
+										highlightKey = StringUtil.jungsung(typingNextLetter);
+									else
+										highlightKey = "Backspace";
+								}
+								else {
+									highlightKey = StringUtil.chosung(typingNextLetter);
+								}
 							}
 						}
 					}