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.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;


public class RecycledNumbers {
	private static int T;
	private static ArrayList<Integer> lowerLimit, upperLimit;
	private static ArrayList<Integer> numOfPairs;
	
	public static void main(String[] args) {
		readInputFile ();
		
		getNumberOfRecycledPairs ();
		
		writeOutputFile ();
	}
	
	private static void readInputFile () {
		numOfPairs = new ArrayList<Integer> ();
		lowerLimit = new ArrayList<Integer> ();
		upperLimit = new ArrayList<Integer> ();
		String line = "";
		
		try {
			BufferedReader bufferedReader = new BufferedReader (new InputStreamReader (new FileInputStream ("input/C-small-attempt0.in")));
			
			line = bufferedReader.readLine ();
			T = Integer.parseInt (line);
			
			while ((line = bufferedReader.readLine ()) != null) {
				String [] dataSet = line.split (" ");
				
				lowerLimit.add (Integer.parseInt (dataSet [0]));
				upperLimit.add (Integer.parseInt (dataSet [1]));
			}
			
			System.out.println (lowerLimit + "\n" + upperLimit);
			bufferedReader.close ();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	private static void getNumberOfRecycledPairs () {
		for (int i = 0; i < T; i++) {
			int numOfValidPairs = 0;
			
			for (int j = lowerLimit.get (i); j < upperLimit.get (i); j++) {				
				int numOfDigits = String.valueOf (j).length ();
				//int num = j;
				
				for (int k = 1; k < numOfDigits; k++) {					
					//num = ((num % (int)Math.pow (10, numOfDigits - 1)) * 10 + 
					//		(num / (int)Math.pow (10, numOfDigits - 1)));
					int num = ((j % (int)Math.pow (10, k)) * (int)Math.pow (10, numOfDigits - k)) + (j / (int)Math.pow (10, k));
					
					//if (num / (int)Math.pow (10, numOfDigits - 1) > 0) {
					if (String.valueOf (num).length() == String.valueOf (j).length()) {
						if (j < num && num <= upperLimit.get (i)) {
							numOfValidPairs++;
						}
					}
				}
			}
			numOfPairs.add (numOfValidPairs);
		}
	}
	
	private static void writeOutputFile () {
		try {
			BufferedWriter bufferedWriter = new BufferedWriter (new OutputStreamWriter (new FileOutputStream ("output/output.out")));
			
			for (int i = 0; i < numOfPairs.size (); i++) {
				bufferedWriter.write ("Case #" + (i + 1) + ": " + numOfPairs.get (i) + "\n");
			}
			
			bufferedWriter.close ();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}
