diff --git a/DeckEditor/Rules.js b/DeckEditor/Rules.js
index d3c4551..70d8053 100644
--- a/DeckEditor/Rules.js
+++ b/DeckEditor/Rules.js
@@ -521,7 +521,7 @@ IllustRule.parse = function (words) {
 ///////////////////////////////////////////////////////////////
 var WxidRule = {};
 WxidRule.parseWord = function (word) {
-	var match = word.match(/^(wx\d{2}|wd\d{2}|pr|sp\d{2})-?(re\d{0,2}|cb\d{0,2}|\d{0,3})$/);
+	var match = word.match(/^(wx\d{2}|wd\d{2}|pr|sp\d{2})-?(re\d{0,2}|cb\d{0,2}|\d{0,3}[a|b]?)$/);
 	if (!match) return null;
 	return match[1] + '-' + match[2];
 }
diff --git a/DeckManager.js b/DeckManager.js
index 693005c..0a7b1a8 100644
--- a/DeckManager.js
+++ b/DeckManager.js
@@ -205,6 +205,9 @@ DeckManager.prototype.checkDuplicate = function (pids) {
 	var bucket = {};
 	pids.forEach(function (pid) {
 		var info = CardInfo[pid];
+		if (info.sideA) {
+			info = CardInfo[info.sideA]
+		}
 		if (info.cid in bucket) {
 			bucket[info.cid]++;
 		} else {