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.*;
import java.util.*;

public class GCJ2012QualC{
    void solve(){
        Scanner sc = new Scanner(System.in);
				//				sc.useDelimiter("\n");
        int T = sc.nextInt();
				for(int testCase = 1; testCase <= T; testCase++){
						int first = sc.nextInt();
						int last = sc.nextInt();
						//						str = Translate(str);
						//System.out.println(first + " " + last);
						System.out.println("Case #" + testCase + ": " + Test2(first, last));
				}
    }

		private int Test2(int first, int last){
				int tmp = 0;
				int[][] map = new int[last + 1][last + 1];
				for(int i = 0; i < last + 1; i++){
						for(int j = 0; j < last + 1; j++){
								map[i][j] = 0;
						}
				}

				for(int i = 0; i < last - first; i++){
						String firstStr = String.valueOf(first + i);
						for(int j = 0; j < firstStr.length(); j++){
								
								String tmp1 = firstStr.substring(j, firstStr.length());
								
								String tmp2 = firstStr.substring(0, j);
												//												System.out.println("Tmp2: " + tmp2);
								int tmpI1 = Integer.parseInt(tmp1 + tmp2);
								//										System.out.println("Tmp1: " + tmpI1 + "Tmp2: " + tmpI2);
								if(tmpI1 > first + i && tmpI1 <= last ){
										//					System.out.println(first + i + " -> " + tmpI1);
										if(map[first + i][tmpI1] == 0){
												tmp++;
												map[first + i][tmpI1] = 1;
										}
								}
								/*
									if(tmpI2 > first + i && tmpI2 < last){
									tmp++;
									System.out.println(first + i + " -> " + tmpI2);
									}
								*/
								
						}
				}
				
				return tmp;
		}

		private int Test(int first, int last){
				int tmp = 0;
				for(int i = 0; i < (first + last) / 2; i++){
						if((first + i) % 11 != 0){
								String firstStr = String.valueOf(first + i);
								for(int j = 0; j < firstStr.length(); j++){
										for(int k = j + 1; k < firstStr.length(); k++){
												String tmp1 = firstStr.substring(j, k);

												String tmp2 = firstStr.substring(0, j) + firstStr.substring(k, firstStr.length());
												//												System.out.println("Tmp2: " + tmp2);
												int tmpI1 = Integer.parseInt(tmp1 + tmp2);
												int tmpI2 = Integer.parseInt(tmp2 + tmp1);
												System.out.println("Tmp1: " + tmpI1 + "Tmp2: " + tmpI2);
												if(tmpI1 > first + i && tmpI1 < last){
														System.out.println(first + i + " -> " + tmpI1);
														tmp++;
												}
												if(tmpI2 > first + i && tmpI2 < last){
														tmp++;
														System.out.println(first + i + " -> " + tmpI2);
												}
										}

								}
						}
				}

				/*
				String tmpStr = "12345";
				System.out.println(tmpStr.substring(2,4));
				System.out.println(tmpStr.substring(0,2));
				System.out.println(tmpStr.substring(4,5));
				*/
				return tmp;
		}

		private String Translate(String input){
				char[] tmpStr = input.toCharArray();
				for(int i = 0; i < input.length(); i++){
						switch(input.charAt(i)){
						case 'y':	tmpStr[i] = 'a';break;
						case 'n':	tmpStr[i] = 'b';break;
						case 'f': tmpStr[i] = 'c';break;
						case 'i': tmpStr[i] = 'd';break;
						case 'c': tmpStr[i] = 'e';break;
						case 'w': tmpStr[i] = 'f';break;
						case 'l': tmpStr[i] = 'g';break;
						case 'b': tmpStr[i] = 'h';break;
						case 'k': tmpStr[i] = 'i';break;
						case 'u': tmpStr[i] = 'j';break;
						case 'o': tmpStr[i] = 'k';break;
						case 'm': tmpStr[i] = 'l';break;
						case 'x': tmpStr[i] = 'm';break;
						case 's': tmpStr[i] = 'n';break;
						case 'e': tmpStr[i] = 'o';break;
						case 'v': tmpStr[i] = 'p';break;
						case 'z': tmpStr[i] = 'q';break;
						case 'p': tmpStr[i] = 'r';break;
						case 'd': tmpStr[i] = 's';break;
						case 'r': tmpStr[i] = 't';break;
						case 'j': tmpStr[i] = 'u';break;
						case 'g': tmpStr[i] = 'v';break;
						case 't': tmpStr[i] = 'w';break;
						case 'h': tmpStr[i] = 'x';break;
						case 'a': tmpStr[i] = 'y';break;
						case 'q': tmpStr[i] = 'z';break;
						default : break;
						}
				}
				
				return String.valueOf(tmpStr);

		}

    public static void main(String args[]){
        new GCJ2012QualC().solve();
    }
}