import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
public class recycled {


	public static void main(String[] args) throws IOException	
	{
		
		BufferedReader in = new BufferedReader(new FileReader("C-large.in"));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));
		int nc = Integer.parseInt(in.readLine().trim());



		for (int z=1; z<=nc; z++){
			String[] line = in.readLine().trim().split("\\s+");
			int a = Integer.parseInt(line[0]);
			int b = Integer.parseInt(line[1]);
			boolean[] flgs = new boolean[2000000+1];
			int count = 0;
			for (int i = a; i <=b; i++)
			{
				
				List<Integer> list = new ArrayList<Integer>();
				list.add(i);
				if (flgs[i]) continue;
				
				int val = 1;
				String num1 = i+"";
				for (int j = 1; j <=num1.length(); j++)
				{

					String num2 = num1.substring(j) + num1.substring(0, j);
					int num = Integer.parseInt(num2);
					if (num2.charAt(0)!='0') if (num<=b&&num!=i&&num>a)  if (!flgs[num])
					{		
						list.add(num);
						val++;
						flgs[num] = true;
					}



				}
				val = val*(val-1);
				val>>=1;
				//if (val>0)tr(list);
				
				count+=val;	
				//if (val>0) System.out.println(count);

			}





			//MODIFY
			out.println(String.format("Case #%d: %d", z,count));
		}
		out.close();
	}
	public static void tr(Object...objects)
	{
		System.out.println(Arrays.deepToString(objects));
	}
}
