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.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map.Entry;
import java.util.Set;

public class CodeJam
{

    private Set<Integer> generateCombination(Integer i, Integer max)
    {
        final Set<Integer> output = new HashSet<Integer>();
        final Integer len = String.valueOf(i).length();

        Integer num = i;
        double pow = Math.pow(10, len - 1);

        for (int j = 0; j < len - 1; ++j)
        {
            num = (int) ((num % pow) * 10 + (num / pow));
            if (num > i && num <= max)
                output.add(num);
        }

        return output;
    }

    private List<HashMap<Integer, Integer>> getInputValue()
    {
        List<HashMap<Integer, Integer>> inpVal = new ArrayList<HashMap<Integer, Integer>>();

        BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
        try
        {
            final String tc_ = stdin.readLine();
            Integer testCase = Integer.parseInt(tc_);

            while (testCase-- > 0)
            {
                // System.err.println("tc#" + testCase);
                final String[] input = stdin.readLine().split(" ");
                final int min = Integer.parseInt(input[0]);
                final int max = Integer.parseInt(input[1]);

                inpVal.add(new HashMap<Integer, Integer>() {
                    {
                        put(min, max);
                    }
                });
            }

            return inpVal;
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }

        return null;
    }

    public static void main(String[] args)
    {
        CodeJam cj = new CodeJam();
        List<HashMap<Integer, Integer>> inp = cj.getInputValue();
        int count = 1;

        for (HashMap<Integer, Integer> tc : inp)
        {

            // operating for tc
            int min = 0, max = 0;
            int answer = 0;
            for (Entry<Integer, Integer> e : tc.entrySet())
            {
                min = e.getKey();
                max = e.getValue();
            }
            for (int i = min; i <= max; ++i)
            {
                answer += cj.generateCombination(i, max).size();
            }
            System.out.println("Case #" + count++ + ": " + answer);

        }

        // System.err.println(cj.generateCombination(24, 40));
    }
}
