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.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author edemairy
 */
public class Main {

    private final static Logger logger = Logger.getLogger(Main.class.getName());
    private static int nbTC;
    private static StringBuilder result = new StringBuilder();

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        logger.setLevel(Level.OFF);
//        Scanner scanner = new Scanner(System.in);
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        nbTC = readInt(reader);
//        scanner.nextLine();
        for (int tc = 1; tc <= nbTC; ++tc) {
            result.append("Case #" + tc + ": ");
            result.append(oneTestCase(reader));
            result.append('\n');
        }
        System.out.print(result);
    }
    private static TreeSet<Integer> found = new TreeSet<Integer>();
    private static TreeSet<Integer> cycle = new TreeSet<Integer>();
    private static int[] p10 = {1, 10, 100, 1000, 10000, 100000, 1000000};

    private static StringBuilder oneTestCase(BufferedReader reader) throws IOException {
        int A = readInt(reader);
        int B = readInt(reader);
        int rnum = 0;
        found.clear();
        fori:
        for (int i = A; i <= B; ++i) {
            cycle.clear();
            int lg = (int) Math.floor(Math.log10(i));
            if (lg == 0) {
                continue fori;
            }
            if (found.contains(i)) {
                continue fori;
            }
            do {
                if (i >= p10[lg]) {
                    if ((i >= A) && (i <= B)) {
                        cycle.add(i);
                    }
                }
                int ld = i % 10;
                i /= 10;
                i += p10[lg] * ld;
            } while (!cycle.contains(i));
            int n = cycle.size();
            if (n != 1) {
                rnum += n * (n - 1) / 2;
                found.addAll(cycle);
            }
        }
        Formatter formatter = new Formatter();
        StringBuilder result = new StringBuilder();
//        for (int i = 0; i < 5; ++i) {
//            formatter.format("%3d", n[i]);
//        }
//        result.append(formatter.out());
        result.append(rnum);
        return result;
    }

    private static int readInt(BufferedReader reader) throws IOException {
        int result = 0;
        boolean positive = true;
        char currentChar = (char) reader.read();

        while ((currentChar == ' ') || (currentChar == '\n')) {
            currentChar = (char) reader.read();
        }
        if (currentChar == (char) -1) {
            throw new IOException("end of stream");
        }
        if (currentChar == '-') {
            positive = false;
            currentChar = (char) reader.read();
        }
        while ((currentChar >= '0') && (currentChar <= '9')) {
            result = result * 10 + currentChar - '0';
            currentChar = (char) reader.read();
        }
        if (positive) {
            return result;
        } else {
            return -result;
        }
    }

    private static char readChar(BufferedReader reader) throws IOException {
        return (char) reader.read();
    }
}
