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.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.util.Scanner;


public class problem3 {
	public static void main(String[] args){
		try{
			  // Create file 
			  FileWriter fstream1 = new FileWriter("E:/out.txt");
			  BufferedWriter outp = new BufferedWriter(fstream1);
			  try{
				  Scanner sc = new Scanner(new File("E:/C-large.in"));
				  int cnt1=sc.nextInt();
				  cnt1=1;
				  while (sc.hasNextInt()) {
					  int low = sc.nextInt();
					  int high = sc.nextInt();
					  int cnt=0;
					  for(int i=low; i<=high;i++){
						  int y=i;
						  String str = new Integer(i).toString();
						  int[] sol = new int[str.length()];
						  int cn = 0;
						  for(int j=0;j<str.length(); j++){
							  while(y%10==0){
								  y=y/10;
								  j++;
							  }	  
							  int x=y%10;
							  y=y/10;
							  y+=x*(int)(Math.pow(10, (str.length()-1)));
							  if(y>i&&y<=high){
								  boolean rep = false;
								  for(int k=0;k<cn;k++){
									  if(y==sol[k])
										  rep = true;
								  }
								  if(rep==false){
									  cnt++;
									  sol[cn]=y;
									  cn++;
								  }
							  }
								  
						  }
						  
					  }
					  outp.write("Case #"+cnt1+": "+cnt+'\n');
					  cnt1++;
				  }
			  }catch(FileNotFoundException e){System.out.println("File not found");}
			  outp.close();
		}catch (Exception e){//Catch exception if any
		System.err.println("Error: " + e.getMessage());
		} 
	}
}
