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.FileInputStream;
import java.io.FileNotFoundException;
import java.util.HashSet;
import java.util.Scanner;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author JY
 */
public class ProblemC4Test {

    private static int testNum;
    private static int[][] data;
    private static final int EQUAL = 0;
    private static final int LESS = 1;
    private static final int LARGER = 2;

    public static void main(String[] args) {
        input();
        int[] result = calc();
        output(testNum, result);
    }

    private static void input() {
        Scanner in = null;

        String file = "C-small-attempt0.in";
        try {
            in = new Scanner(new FileInputStream(file));
        } catch (FileNotFoundException ex) {
            System.out.println("Error reading file.");
            System.exit(0);
        }

        //in = new Scanner(System.in);
        testNum = Integer.parseInt(in.nextLine());
        data = new int[testNum][];
        for (int i = 0; i < testNum; i++) {
            String line = in.nextLine();
            String[] nums = line.split(" ");
            data[i] = new int[2];
            data[i][0] = Integer.parseInt(nums[0]);
            data[i][1] = Integer.parseInt(nums[1]);
        }
    }

    private static int[] calc() {
        HashSet<Integer> hs = new HashSet<Integer>();
        int[] res = new int[testNum];
        for (int i = 0; i < testNum; i++) {
            int result = 0;
            int a = data[i][0];
            int b = data[i][1];
            int length = getLength(b);;
            for (int number = a; number <= b; number++) {
                hs.clear();
                for (int shifts = 1; shifts < length; shifts++) {
                    int shiftnum = shift(number, shifts);
                    if (shiftnum <= b && shiftnum > number && !hs.contains(shiftnum)) {
                        result++;
                        hs.add(shiftnum);
                    }
                }
            }
            res[i] = result;
        }
        return res;
    }

    private static int getLength(int n) {
        return String.valueOf(n).length();
    }

    private static int shift(int num, int shift) {
        String numS = String.valueOf(num);
        int len = numS.length();
        numS = reverse(numS, 0, len - shift - 1);
        numS = reverse(numS, len - shift, len - 1);
        numS = reverse(numS, 0, len - 1);
        return Integer.parseInt(numS);
    }

    private static String reverse(String target, int start, int end) {
        char[] tar = target.toCharArray();
        while (start < end) {
            char tmp = tar[start];
            tar[start] = tar[end];
            tar[end] = tmp;
            start++;
            end--;
        }
        return new String(tar);
    }

    private static void output(int testNum, int[] res) {
        for (int i = 0; i < testNum; i++) {
            System.out.printf("Case #%d: %s\n", i + 1, res[i]);
        }
    }
}
