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

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

import java.util.*;
public class codejam {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc=new Scanner(System.in);
		int m=sc.nextInt();
		int i;
		int j;
		int k;
		int x;
		int y;
		int l;
		int z;
		for(i=1;i<=m;i++) {
			int a=sc.nextInt();
			int b=sc.nextInt();
			int count=0;
			
			for(j=a;j<=b;j++) {
				x=j;
				l=Integer.toString(j).length();
				int[] used=new int[l];
				for(k=1;k<=l-1;k++) {
					// shift k digits
					
					y=(int)Math.pow(10, k)*(x%(int)Math.pow(10, l-k))+x/(int)Math.pow(10,l-k);
					y=y+2-2;
					if(x<y && y<=b) {
					
						boolean neu=true;
						for(z=0;z<l;z++) {
							if(used[z]==y) {
								neu=false;
								break;
							}
						}
					
						if(neu) {
							count++;
							used[k]=y;
//							System.out.println(x+" "+y);
						}
					}
				}
			}
			System.out.println("Case #"+i+": "+count);
		}
	}

}
