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 * 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.*;
import java.util.*;
public class C {
	public static int a;
	public static int b;
	public static void main(String[] args) throws Exception{
		File f = new File("C-small-attempt0.in");
		Scanner sc = new Scanner(f);
		BufferedWriter bw = new BufferedWriter(new FileWriter("output.txt"));
		int n = sc.nextInt();
		for(int i = 0;i<n;i++) {
			a = sc.nextInt();
			b = sc.nextInt();
			bw.write("Case #"+(i+1)+": "+count(a,b));
			bw.write("\r\n");			
		}
		bw.close();
		sc.close();
	}
	public static int count(int a,int b) {
		int k = 0;
		int temp = a;
		int total = 0;
		int temp2;
		while(temp>0) {
			k++;
			temp /=10;
		}
		int [] v = new int[k+1];
		for(int i = a;i<=b;i++) {
			temp = 0;
			temp2 = i;
			for(int j = 0;j<k;j++) {				
				temp2 =  (temp2%10)*((int)Math.pow(10,k-1)) + temp2/10;
				if(temp2>i&&temp2<=b) {
					v[temp] = temp2;
					temp++;
					for(int t = 0;t<temp-1;t++) {
						if(v[t]==temp2){
							temp--;
							break;
						}
					}					
				}
			}
			total +=temp;			
		}	
		return total;
	}
}