import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;

public class ReadFile {
	public static void main(String[] args) throws Exception {
		String srcFile = "C:" + File.separator + "Documents and Settings"
				+ File.separator + "rohit" + File.separator + "My Documents"
				+ File.separator + "Downloads" + File.separator
				+ "C-small-attempt1.in.txt";
		String destFile = "C:" + File.separator + "Documents and Settings"
				+ File.separator + "rohit" + File.separator + "My Documents"
				+ File.separator + "Downloads" + File.separator
				+ "C-small-attempt0.out";
		File file = new File(srcFile);
		List<String> readData = new ArrayList<String>();
		FileReader fileInputStream = new FileReader(file);
		BufferedReader bufferedReader = new BufferedReader(fileInputStream);
		StringBuilder stringBuilder = new StringBuilder();
		String line = null;
		while ((line = bufferedReader.readLine()) != null) {
			readData.add(line);
		}
		stringBuilder.append(generateOutput(readData));
		File writeFile = new File(destFile);
		if (!writeFile.exists()) {
			writeFile.createNewFile();
		}
		FileWriter fileWriter = new FileWriter(writeFile);
		BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
		bufferedWriter.write(stringBuilder.toString());
		bufferedWriter.close();
		System.out.println("output" + stringBuilder);
	}

	/**
	 * @param number
	 * @return
	 */
	private static String generateOutput(List<String> number) {
		StringBuilder stringBuilder = new StringBuilder();
		for (int i = 0; i < number.size(); i++) {
			if (i == 0) {
				continue;
			} else {
				String tempString = number.get(i);
				String[] temArr = tempString.split(" ");
				stringBuilder.append("Case #" + i + ": ");
				stringBuilder.append(getRecNumbers(temArr[0], temArr[1]));
				stringBuilder.append("\n");
			}
		}
		if (stringBuilder.length() > 0) {
			stringBuilder.deleteCharAt(stringBuilder.length() - 1);
		}
		return stringBuilder.toString();
	}

	// /* This method accepts method for google code jam */
	// private static String method(String value) {
	// int intValue = Integer.valueOf(value);
	// double givenExpr = 3 + Math.sqrt(5);
	// double num = Math.pow(givenExpr, intValue);
	// String valArr[] = (num + "").split("\\.");
	// int finalVal = Integer.valueOf(valArr[0]) % 1000;
	//
	// return String.format("%1$03d", finalVal);
	//
	// }
	//
	// /* This method accepts method for google code jam */
	// private static String method2(String value) {
	// StringTokenizer st = new StringTokenizer(value, " ");
	// String test[] = value.split(" ");
	// StringBuffer str = new StringBuffer();
	//
	// for (int i = 0; i < test.length; i++) {
	// // test[i]=test[test.length-i-1];
	// str.append(test[test.length - i - 1]);
	// str.append(" ");
	// }
	// str.deleteCharAt(str.length() - 1);
	// String strReversedLine = "";
	//
	// while (st.hasMoreTokens()) {
	// strReversedLine = st.nextToken() + " " + strReversedLine;
	// }
	//
	// return str.toString();
	// }

	private static int getRecNumbers(String no1, String no2) {

		int a = Integer.valueOf(no1);
		int b = Integer.valueOf(no2);
		Set<String> dupC = new HashSet<String>();
		for (int i = a; i <= b; i++) {
			int n = i;
			List<String> value = findPerm(n);
			for (String val : value) {
				if (Integer.valueOf(val) <= b && Integer.valueOf(val) >= a
						&& n < Integer.valueOf(val)) {
					dupC.add(n + "-" + val);
				}
			}
		}
		return dupC.size();
	}

	private static List<String> findPerm(int num) {
		String numString = String.valueOf(num);
		List<String> value = new ArrayList<String>();
		for (int i = 0; i < numString.length(); i++) {
			String temp = charIns(numString, i);
			if (!temp.equalsIgnoreCase(numString)) {
				value.add(charIns(numString, i));
			}
		}
		return value;

	}

	public static String charIns(String str, int j) {
		String begin = str.substring(0, j);
		String end = str.substring(j);
		return end + begin;
	}
}
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class RecycledPair{
	public static ArrayList<String> pairsList;
	public static void main(String[] args) throws Exception{
		System.setIn(new BufferedInputStream(new FileInputStream(".\\input\\C-small-attempt0.in")));
		System.setOut(new PrintStream(new File(".\\output\\C-small-attempt0.out")));
		Scanner in = new Scanner(System.in);
		pairsList=new ArrayList<String>();
		int caseNum=in.nextInt();
		for(int i=0;i<caseNum;i++){
			int a=in.nextInt();
			int b=in.nextInt();
			pairsList.removeAll(pairsList);
			if(b<=9){
				System.out.println("Case #"+(i+1)+": " +0);
			}else{
				int totalPair=getPairs(a,b);
				System.out.println("Case #"+(i+1)+": " +totalPair);
			}
//			if(i==1){
//				
//				System.out.println(a+"--"+b+" : "+pairsList.toString());
//			}
		}
	}
	private static int getPairs(int a, int b) {
		int totalPair=0;
		for(int k=a;k<=b;k++){
			//System.out.println("µ±Ç°µÄÖµÎª£º"+k);
			int count=0;
				totalPair+=getPairOf(k, a, b,count);		
		}
		return totalPair;
	}
	public static int getPairOf(int target,int begin,int end,int count){
		//int pairs=0;
		int[] targetArray=parseIntToIntArray(target);
		int c=0;
		for(int i=1;i<targetArray.length;i++){
			int movedTargetArray[]=moveFront(targetArray, i);
			int movedTarget=calculateIntArray(movedTargetArray);
			//System.out.println("move target: "+movedTarget);
			if(compares(movedTarget, begin)!=-1 && compares(movedTarget, end)!=1
					&& target!=movedTarget){
				//System.out.println(++c +": "+target+"--"+movedTarget);
				String str1=target +" "+movedTarget;
				String str2=movedTarget +" "+target;
				if(!pairsList.contains(str1) && !pairsList.contains(str2)){
					pairsList.add(str1);
					pairsList.add(str2);	
					count++;
					//System.out.println( "-->pairs -->"+count);
				}
				
				//getPairOf(movedTarget, begin, end,count);
				
			}
		}
		return count;
	}
	
	public static int[] parseIntToIntArray(int param){
		int i=1;
		int target=param;
		while(target/10>=1){
			i++;
			target=target/10;
		}
		int[] result=new int[i];
		for(i=0;i<result.length;i++){
			int temp=(int)Math.pow(10, result.length-i-1);
			result[i]=param/temp;
			param=param-result[i]*temp;
		}
		return result;
	}
	public static  int calculateIntArray(int [] array){
		int sum=0;
		int i=0;
		for( i=0;i<array.length;i++){
			sum+=array[i]*(int)Math.pow(10, array.length-i-1);
		}
		//sum+=array[i];
		return sum;
		
	}
	private static int[] moveFront(int[] array,int len){
		int[] result=new int[array.length];
		for(int i=0;i<len;i++){
			result[i]=array[array.length-len+i];
		}
		for(int i=len;i<array.length;i++){
			result[i]=array[i-len];
		}
		return result;
	}
	public static int isSmallAt(int[] newArray,int[] begin,int len){
		for(int i=0;i<len;i++){
			if(newArray[i]<begin[i])return i;
		}
		return len;
	}
	public static int compares(int a,int b){
		if(a>b)return 1;
		if(a<b)return -1;
		return 0;
	}
}