import java.io.*;
import java.util.*;

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

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

import java.io.BufferedReader;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;

/** Main function is "solve" **/
public class CodeJamProblem3 {
	static HashMap<String, String> mappings = null;

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

	private static void solve() {
		readFromInputAndWriteInOutput();
	}

	private static void readFromInputAndWriteInOutput() {
		try {
			File f = new File("D:\\code_html\\C-large.in");
			FileReader fileReader = new FileReader(f);
			BufferedReader buff = new BufferedReader(fileReader);
			String totalTestCases = buff.readLine();
			PrintWriter printWriter = new PrintWriter(
					"D:\\code_html\\C-large.out");
			int testCases = Integer.parseInt(totalTestCases);
			for (int i = 1; i <= testCases; i++) {

				String line = buff.readLine();
				String outputLine = "Case #" + i + ": ";
				String result = solveForThisLine(line);
				outputLine = outputLine.concat(result);
				printWriter.println(outputLine);
				//System.out.println(outputLine);
			}
			printWriter.close();
			fileReader.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
	private static String solveForThisLine(String line) {

		String lineSplit[] = line.split(" ");
		int numA = Integer.parseInt(lineSplit[0]);
		int numB = Integer.parseInt(lineSplit[1]);
		int result = 0;
		int length = lineSplit[0].length();
		int tensLength = 1;	
	//	System.out.println();
		for(int i=0;i<length-1;i++)
		{
			tensLength=tensLength*10;
		}
		for (int i = numA; i <= numB; i++) {
			int n = i;
			ArrayList<Integer > list2 = new ArrayList<Integer>();
			for (int j = 0; j <=length; j++) {
				
				int m = reverse(i, j,tensLength);
				if (numA <= n && n < m && m <= numB) {
						if(list2.contains(m))
						{
						   continue;
						}
					list2.add(m);
					result = result + 1;
				}
				
			}
		}
		return result + "";
	}

	private static int reverse(int number, int shiftBy, int tensLength) {
		int temp = 0, reversedNumber = 0;
		for (int i = 0; i <shiftBy; i++) {		
			temp = number % 10;
			number = number / 10;
			reversedNumber = temp *tensLength  + number;
			number= reversedNumber;
		}
		return reversedNumber;
	}

}
