import java.util.*;
import java.io.*;

public class recycled_numbers {
	public static void main(String[]a) throws Exception{
		
		Scanner f = new Scanner(new File(a[0]));
		int result=0;
		int A,B;
		String n,m;
		HashSet<String> s=new HashSet<String>();
		
		int T=f.nextInt();	//T total case count
		for (int t=1; t<=T;t++){//for each case t
			
			s.clear();
			result=0;				//reset
			A=f.nextInt();B=f.nextInt();	//get values for next case
			
			if (A==B)result=0;//remove case not meeting problem limits 
			else{
				for(int i=A;i<=B;i++){//for each int in range
					n=Integer.toString(i);
					m=new String(n);
					//System.out.println(n);
					for (int j=1;j<n.length();j++){//move each digit to the front & test
						m = m.substring(m.length()-1)+m.substring(0,m.length()-1);
						if(m.matches("^0+[\\d]+")!=true &&
								Integer.parseInt(m)<=B &&
								Integer.parseInt(n)<Integer.parseInt(m)){
							s.add(new String(n+","+m));
							//result++;
							//System.out.println(" matched: "+m);
						}
						
					}
				}
				result = s.size();
			}

			//display output
			System.out.println("Case #" + t + ": " + result);
		}
	}
}
import java.util.Arrays;
import java.util.Scanner;

/**
 * @author Dmitry Levshunov (levshunov.d@gmail.com)
 */
public class TaskC {
    private static boolean[] used = new boolean[2000001];
    private static int length;
    private static int pow;

    public static void main(String[] args) throws Exception {
        Scanner scanner = new Scanner(System.in);

        int tests = Integer.parseInt(scanner.nextLine().trim());

        for (int test = 1; test <= tests; test++) {
            int a = scanner.nextInt();
            int b = scanner.nextInt();

            System.out.printf("Case #%d: %s", test, solve(a, b));
            System.out.println();
        }

        scanner.close();
    }

    private static long solve(int a, int b) {
        Arrays.fill(used, false);

        length = Integer.toString(a).length();
        pow = 1;
        for (int i = 0; i < length - 1; i++) {
            pow *= 10;
        }

        long result = 0;

        for (int x = a; x <= b; x++) {
            long shiftCount = processShifts(x, a, b);
            result += shiftCount * (shiftCount - 1) / 2;
        }

        return result;
    }

    private static int processShifts(int x, int a, int b) {
        if (used[x]) {
            return 0;
        }

        int result = 0;

        for (int i = 0; i < length; i++) {
            x = (x % 10) * pow + x / 10;
            if (a <= x && x <= b && !used[x]) {
                used[x] = true;
                result++;
            }
        }

        return result;
    }
}
