diff -up ./src/chewingio.c.phraseChoiceRearward ./src/chewingio.c
--- ./src/chewingio.c.phraseChoiceRearward	2008-12-02 00:29:20.000000000 +1000
+++ ./src/chewingio.c	2009-05-18 18:02:15.000000000 +1000
@@ -740,6 +740,7 @@ CHEWING_API int chewing_handle_Down( Che
 	int toSelect = 0;
 	int keystrokeRtn = KEYSTROKE_ABSORB;
 	int key_buf_cursor;
+	static int cursor_last=-1;
 
 	CheckAndResetRange( pgdata );
 
@@ -757,9 +758,15 @@ CHEWING_API int chewing_handle_Down( Che
 
 	if ( toSelect ) {
 		if( ! pgdata->bSelect ) {
+			cursor_last=pgdata->chiSymbolCursor;
 			ChoiceFirstAvail( pgdata );
 		}
 		else {
+			if ( pgdata->config.bPhraseChoiceRearward ){
+				int avail_willbe=(pgdata->availInfo.currentAvail>0)? 
+					pgdata->availInfo.currentAvail-1: pgdata->availInfo.nAvail - 1;
+				pgdata->chiSymbolCursor=cursor_last -pgdata->availInfo.avail[avail_willbe].len;
+			}
 			ChoiceNextAvail( pgdata );
 		}
 	} 
diff -up ./src/choice.c.phraseChoiceRearward ./src/choice.c
--- ./src/choice.c.phraseChoiceRearward	2008-12-02 00:29:20.000000000 +1000
+++ ./src/choice.c	2009-05-18 17:56:32.000000000 +1000
@@ -73,20 +73,42 @@ static void ChangeSelectIntervalAndBreak
 /** @brief Loading all possible phrases after the cursor from long to short into AvailInfo structure.*/
 static void SetAvailInfo( 
 		AvailInfo *pai, const uint16 phoneSeq[], 
-		int nPhoneSeq, int begin, const int bSymbolArrBrkpt[] )
+		int nPhoneSeq, int begin, const int bSymbolArrBrkpt[],
+		ChewingData *pgdata)
 {
 	int end, pho_id;
 	int diff;
 	uint16 userPhoneSeq[ MAX_PHONE_SEQ_LEN ];
 
 	pai->nAvail = 0;
+	
+	int i,head,head_tmp;
+	if ( pgdata->config.bPhraseChoiceRearward ){
+		for (i=nPhoneSeq-1;i>=begin;i--){
+			head=i;
+			if(bSymbolArrBrkpt[i])
+				break;
+		}
+		head_tmp=nPhoneSeq-1;
+	}else{
+		head_tmp=head=begin;
+	}
 
-	for ( end = begin; end < nPhoneSeq; end++ ) {
-		diff = end - begin;
-		if ( diff > 0 && bSymbolArrBrkpt[ end ] ) 
-			break;
+	int tail,tail_tmp;
+	if ( pgdata->config.bPhraseChoiceRearward ){
+		tail_tmp=tail=nPhoneSeq-1;
+	}else{
+		for (i=begin;i<nPhoneSeq;i++){
+			if(bSymbolArrBrkpt[i])
+				break;
+			tail=i;
+		}
+		tail_tmp=begin;
+	}
 
-		pho_id = TreeFindPhrase( begin, end, phoneSeq );
+	while(head<=head_tmp && tail_tmp>=tail){
+		diff = tail_tmp - head_tmp;
+		pho_id = TreeFindPhrase( head_tmp, tail_tmp, phoneSeq );
 		if ( pho_id != -1 ) {
 			/* save it! */
 			pai->avail[ pai->nAvail ].len = diff + 1;
@@ -96,7 +118,7 @@ static void SetAvailInfo( 
 		else {
 			memcpy(
 				userPhoneSeq, 
-				&phoneSeq[ begin ], 
+				&phoneSeq[ head_tmp ], 
 				sizeof( uint16 ) * ( diff + 1 ) ) ;
 			userPhoneSeq[ diff + 1 ] = 0;
 			if ( UserGetPhraseFirst( userPhoneSeq ) ) {
@@ -109,6 +131,12 @@ static void SetAvailInfo( 
 				pai->avail[ pai->nAvail ].id = -1;
 			}
 		}
+		
+		if ( pgdata->config.bPhraseChoiceRearward ){
+			head_tmp--;
+		}else{
+			tail_tmp++;
+		}
 	}
 }
 
@@ -229,7 +257,8 @@ int ChoiceFirstAvail( ChewingData *pgdat
 		pgdata->phoneSeq, 
 		pgdata->nPhoneSeq,
 		PhoneSeqCursor( pgdata ),
-		pgdata->bSymbolArrBrkpt );
+		pgdata->bSymbolArrBrkpt,
+		pgdata);
 
 	if ( ! pgdata->availInfo.nAvail )
 		return ChoiceEndChoice( pgdata );