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();
    }
}

//RECYCLED NUMBERS

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;

//Importing classes / interface from java.io pacckage to work with files

public class RecycledNumbers
{
	static boolean checkForNewM(long temp , long [] m , long totalMForThisN)
	{
		for(int i = 0 ; i < totalMForThisN ; i++)
		{
			if(temp == m[i])
			{
				return false;
			}
		}
		
		return true;
	}
	
	public static void main(String[] args)
	{
		try
		{
			// Open the input file
			FileInputStream fistream = new FileInputStream("C-large.in");
			
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fistream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			
			//Create output file
			File file = new File("output.out");
			boolean exist = file.createNewFile();
			
			if (!exist)
			{
				System.out.println("File already exists.");
				System.exit(0);
			}
			
			FileWriter fostream = new FileWriter("output.out");
			BufferedWriter out = new BufferedWriter(fostream);
			
			int counterCases = 0;		//Counter purpose
			
			//Read File Line By Line
			int totalNumberOfCases = 0;
			while ((strLine = br.readLine()) != null)
			{
				if(counterCases == 0)
				{
					//Ignore the first Line for Conversion
					totalNumberOfCases = Integer.parseInt(strLine);
					counterCases++;
					continue;
				}
				
				String[] results = strLine.split(" ");
				
				long A = Long.parseLong(results[0]);
				long B = Long.parseLong(results[1]);
				
				int counter = 0;
				
				for(long n = A ; n < B ; n++)
				{			
					String nTemp = "" + n;
					String mTemp;
					
					int totalMForThisN = 0;
					long [] m = new long [nTemp.length() - 1];
					
					for(int i= (nTemp.length() - 1) ; i >= 0 ; i--)
					{
						mTemp = nTemp.substring(i) + nTemp.substring(0,i);
						
						if(mTemp.startsWith("0"))
						{
							continue;
						}
						else
						{
							long temp = Long.parseLong(mTemp);
							
							if(temp > n && temp <= B)
							{
								if(checkForNewM(temp, m, totalMForThisN))
								{
									m[totalMForThisN] = temp;
									totalMForThisN++;
									counter++;
								}
							}
						}
					}
				}
				// Print the content in the output file
				out.write("Case #" + counterCases + ": " + counter);
				
				if(counterCases < totalNumberOfCases)
				{
					out.write("\n");
				}
				counterCases++;
			}
			//Close the input stream
			in.close();

			//Close the output Stream
			out.close();
		}
		
		catch(Exception e)
		{
			//Catch exception if any
			System.err.println("Error: " + e.getMessage() + " : " + e);
		}
	}
}