/*
 * 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.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Recycle {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int i = 1; i <= T; i++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = getResult(A, B);
			System.out.println("Case #" + i + ": " + result);
		}
		
	}

	private static int getResult(int A, int B) {
		int result = 0;
		int numDigits = Integer.toString(A).length();
		Set<Integer> processed = new HashSet<Integer>();
		for (int num = A; num <= B; num++) {
			if (processed.contains(num))
				continue;
			processed.add(num);
			int count = 0;
			for (int rotated = 1; rotated < numDigits; rotated++) {
				int tp = tenpow(rotated);
				int dropped = num % tp;
				int stay = num / tp;
				int recyclednumber = dropped * tenpow(numDigits - rotated) + stay;
				if (processed.contains(recyclednumber))
					continue;
				processed.add(recyclednumber);
				if (recyclednumber >= A && recyclednumber <= B)
					count++;
			}
			if (count == 0)
				continue;
			count +=1;
			result += ncr(count, 2);
		}
		return result;
	}

	private static int ncr(int n, int r) {
		return factorial(n)/(factorial(n-r) * factorial(r));
	}

	private static int tenpow(int exp) {
		int res = 1;
		for (int i = 0; i < exp; i++)
			res *= 10;
		return res;
	}
	
	private static int factorial(int n)
    {
        if (n == 0) return 1;
        return n * factorial(n-1);
    }

}
