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.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Scanner;

public class GCJ12QRC
{
	private static int a, b, d;
	private static long c;
	private static String output, newline = System.getProperty("line.separator");

	public static void fun()
	{
		String s;
		int i, j, k;
		c = d = 0;
		for(i=a; i>0; i/=10)
			d++;

		for(i=a; i<b; i++) {
			s = "" + i;
			for(j=1; j<d; j++) {
				k = Integer.parseInt(s.substring(j) + s.substring(0, j));
				if(k>i && k<=b) {
					c++;
				}
			}
		}
	}

	public static void main(String[] args) throws IOException
	{
		long t2, t1 = System.currentTimeMillis();
		output = "";
		Scanner sc = new Scanner(new File("C-large.in"));
		int ntc = sc.nextInt();

		for(int w=1; w<=ntc; w++)
		{
			a = sc.nextInt();
			b = sc.nextInt();
			fun();
			output += "Case #" + w + ": " + c + newline;
		}
		sc.close();

		OutputStream fo = new FileOutputStream("C-large.out");
		fo.write(output.getBytes());
		fo.close();
		t2 = System.currentTimeMillis();
		System.out.println( "Time in millis : " + (t2-t1) );
	}
}
