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.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;


public class recycle {
	static int count=0;
	static int A = 0;
	static int B = 0;
	
	public static void permutes(String start){
		int n = Integer.valueOf(start);
		for(int i=1;i<start.length();i++){
			String current = start.substring(0, i);
			String rest = start.substring(i, start.length());
			String finish = rest+current;
			int m = Integer.valueOf(finish);
			if(n==m){
				break;
			}
				
			if(m<=B && n<m){
				count++;
			
			}
		}
		
	}
	public static void main(String args[])
	 {
		String line;
		  int i=0;
		  try{
		  FileInputStream fstream1 = new FileInputStream("CLtest.txt");
		  DataInputStream in1 = new DataInputStream(fstream1);
		  BufferedReader br1 = new BufferedReader(new InputStreamReader(in1));
		  FileWriter fw = new FileWriter("outC.txt");
		  BufferedWriter out = new BufferedWriter(fw);
		 
		  while ((line = br1.readLine()) != null)   {  
		  		

		  		if(i!=0){
		  			String outpt = "Case #"+i+": ";
		  			String brkline[]=line.split(" ");
		  			A = Integer.valueOf(brkline[0]);
		  			//System.out.println("A= "+A);
		  			B = Integer.valueOf(brkline[1]);
		  			//System.out.println("B= "+B);
		  			
		  			for(int p=A;p<=B;p++){
		  				permutes(String.valueOf(p));
		  			}
		  			outpt = outpt+count;		
		  			out.write(outpt+"\n");
		  			System.out.println(outpt);
		  			}
		  		
		  		i++;
		  		count=0;
		  	  }
		  
		  //Close the input stream
		  in1.close();
		  //Close the output stream
		  out.close();
		    }catch (Exception e){//Catch exception if any
		  System.err.println("Error: " + e);
		  }
/////////////////////////////////////////////////				
		
	 }
}
