/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package gcj;

import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author daniele
 */
public class GCJ_C {
    
    public static void main(String[] args) throws Exception{
        
        
        
        Scanner in = new Scanner(new File(args[0]));
        FileWriter out = new FileWriter("/home/daniele/Scrivania/Output");
        

        int prove=in.nextInt();
        int min,max;
        int cifre;
        int cifreaus;
        String temp;
        int aus;
        int count=0;
        ArrayList<Integer> vals = new ArrayList<Integer>();
        int jcount=0;
        ArrayList<Integer> perm = new ArrayList<Integer>();
        
        out.write("");
        out.flush();
        
        for(int i=1;i<=prove;i++){
            
            out.append("Case #" +i+": ");out.flush();
            
            min=in.nextInt();
            max=in.nextInt();
            
            for(int j=min;j<=max;j++){
               if(!vals.contains(j)){
                    temp=""+j;
                    cifre=temp.length();
                    aus=j;
                    perm.add(j);
                    for(int k=1;k<cifre;k++){
                        aus=rotateOnce(aus);
                        temp=""+aus;
                        cifreaus=temp.length();//elusione zeri iniziali
                        if(aus>=min && aus<=max && aus!=j && cifreaus==cifre && nobody(vals,perm)){ 
                            perm.add(aus);
                            jcount ++;
                            
                        }
                        
                    }
                    while(jcount>0){count+=jcount; jcount--;}
                    vals.addAll(perm);
                    perm= new ArrayList<Integer>();
                    
                }
            }
            out.append(count+"\n");out.flush();
            count=0;
            vals= new ArrayList<Integer>();
        }
        
        
        
    }
        static public int rotateOnce(int n){
            String s=""+n;
            if(s.length()>1){
                s=s.charAt(s.length()-1) + s.substring(0,s.length()-1);
                n=Integer.parseInt(s);
            }
            return n;
        }    
        
        static public boolean nobody(ArrayList<Integer> v,ArrayList<Integer> a){;
            for(int i=0;i<a.size();i++)
                if(v.contains(a.get(i))) return false;
            return true;
        } 
    
}


import java.io.File;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class C {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(new File("d:\\cc.small.in"));// new Scanner(new
																// File("d:\\b.small.in"));
		// in = new Scanner(new File("d:\\Minimum Scalar Product-big.in"));

		int testCases = in.nextInt();
		in.nextLine();
		for (int cas = 1; cas <= testCases; cas++) {
			int ans = 0;
			int A = in.nextInt();
			int B = in.nextInt();
			// in.nextLine();

			Map<Integer, Set<Integer>> map = new HashMap<Integer, Set<Integer>>();

			for (int n = A; n < B; n++) {
				String sn = "" + n;
				int len = sn.length();
				for (int i = 1; i < len; i++) {
					String front = sn.substring(0, i);
					String rear = sn.substring(i, len);
					int m = Integer.parseInt(rear + front);

					if (A <= n && n < m && m <= B) {
						Set<Integer> s = map.get(n);
						if (null == s) {
							ans++;
							s = new HashSet<Integer>();
							s.add(m);
							map.put(n, s);
						} else {
							if (s.add(m))
								ans++;
						}
						// System.err.printf("n:%d,m:%d\n",n,m);
					}
				}
			}

			System.out.printf("Case #%d: %d\n", cas, ans);
		}

	}

}
