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

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.awt.geom.*;
import java.io.*;
import java.math.*;
import java.util.*;
import java.util.regex.*;
import static java.lang.Math.*;
import static java.lang.System.*;
public class C_large {

    public C_large() throws Exception {
        int caseCount = in.nextInt();
        for (int caseNum=1;caseNum<=caseCount;caseNum++) {
            out.printf("Case #%d: ", caseNum);

            int a = in.nextInt();
            int b = in.nextInt();
            int ans = 0;
            for (int n=a; n<=b; n++) {
                String sn = n+"";
                if (sn.charAt(0)=='0') continue;
                Set<Integer> set = new HashSet<Integer>();
                for (int i=1; i<sn.length(); i++) {
                    String sm = sn.substring(i)+sn.substring(0, i);
                    int m = Integer.parseInt(sm);
                    if (m>b||n>=m) continue;
                    if (set.contains(m)) continue;
                    set.add(m);
                    ans++;
                }
            }

            out.println(ans);
        }
    }

    // {{{
    Scanner in = new Scanner(System.in);
    public static void main(String[] args) throws Exception {
        new C_large();
    }
    public static void debug(Object... arr) {
        System.err.println(Arrays.deepToString(arr));
    } 
    // }}}
}
