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.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashMap;


public class Main {

	private static String fileDirectory = "files/";
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Problem3(fileDirectory + "C-large.in",fileDirectory + "C-large.out");
	}
	
	public static void Problem3(String inFile, String outFile)
	{
		try {
			BufferedReader br = new BufferedReader(new FileReader(inFile));
			BufferedWriter bw = new BufferedWriter(new FileWriter(outFile));
			

			
			
			int cases = Integer.parseInt(br.readLine());
			
			for (int i = 0; i < cases; i++)
			{
				if (i > 0)
				{
					bw.newLine();
				}
				String line = br.readLine();
				String[] numbers = line.split(" ");
				int A = Integer.parseInt(numbers[0]);
				int B = Integer.parseInt(numbers[1]);
				int length = String.valueOf(A).length();
				int count = 0;
				
				
				
				for (int j = A; j <= B; j++)
				{
					String sNum = Integer.toString(j);
					HashMap<Integer, Integer> map = new HashMap<Integer,Integer>();
					//System.out.print(sNum + ": ");
					for (int k = 1; k < length; k++)
					{
						
						String newNum = sNum.substring(k, sNum.length());
						newNum += sNum.substring(0, k);
						//System.out.print(" " + newNum);
						int number = Integer.parseInt(newNum);
						if (number > j && number <= B)
						{
							if (!map.containsKey(number))
							{
								map.put(number, null);
								count++;
							}
						}
						
					}
					//System.out.println();
				}
				
				
				bw.write("Case #" + (i+1) + ": ");
				bw.write(Integer.toString(count));
			}
			
			
			bw.close();
			br.close();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
	}

}
