import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}


import java.io.*;

public class FileReader {
    
    FileInputStream in;
    DataInputStream dis;
    BufferedReader br;
    public FileReader(File input) throws FileNotFoundException
    {
        in = new FileInputStream(input);
        dis = new DataInputStream(in);
        br = new BufferedReader(new InputStreamReader(dis));
    }
    
    public String nextString() throws IOException
    {
        return br.readLine();
    }
    
    public String[] nextStringArray() throws IOException
    {
        return br.readLine().split(" ");
    }
        
    public char nextChar() throws IOException
    {
        return (char)br.read();
    }
    
    public char[] nextCharArray() throws IOException
    {
        return br.readLine().toCharArray();
    }
    
    public int nextInt() throws IOException
    {
        return Integer.parseInt(nextString());
    }
    
    public int[] nextIntArray() throws IOException
    {
        String[] split = nextStringArray();
        int[] result = new int[split.length];
        for (int i = 0; i < split.length; i++)
        {
            result[i] = Integer.parseInt(split[i]);
        }
        return result;
    }
    
    public long nextLong() throws IOException
    {
        return Long.parseLong(nextString());
    }
    
    public long[] nextLongArray() throws IOException
    {
        String[] split = nextStringArray();
        long[] result = new long[split.length];
        for (int i = 0; i < split.length; i++)
        {
            result[i] = Long.parseLong(split[i]);
        }
        return result;
    }
            
}
