/*
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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.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class cyclic {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int in = Integer.parseInt(sc.nextLine());		
		int i = 1;
		while (i <= in) {
			int A = sc.nextInt();
			int B = Integer.parseInt(sc.nextLine().trim());			
			System.out.print("Case #" + i + ": ");
			if(i < in)
				System.out.println(count(A,B));
			else
				System.out.print(count(A,B));
			i++;
		}
	}

	public static int count(int A, int B) {
		boolean[] flag = new boolean[B - A + 1];
		int numDigits = (int) Math.log10(A) + 1;
		int pairs = 0;
		for (int i = A; i <= B; i++) {
			if (!flag[i - A]) {
				flag[i - A] = true;
				int n = 1;
				for (int j = 1; j < numDigits; j++) {
					int l = (int) (i / Math.pow(10, j));
					l += (i % Math.pow(10, j)) * Math.pow(10, numDigits - j);
					if (l >= A && l <= B && !flag[l-A]) {
						flag[l - A] = true;
						n++;
					}
				}
				if (n > 1) {
					int nC2 = 1;
					for (int j = 0; j < 2; j++) {
						nC2 = nC2 * (n - j) / (j + 1);
					}
					pairs += nC2;
				}
			}
		}

		return pairs;
	}
}
