package codejam;

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

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.util.*;
import java.io.*;
public class C {
	int numLen(int n) {
		int ans = 0;
		while(n>0) {
			ans++;
			n/=10;
		}
		return ans;
	}
	int shift(int n, int pow) {
		int tmp = n%10;
		return n/10 + tmp*pow;
	}
	public C(Scanner in, PrintWriter out) {
		int T = in.nextInt();
		in.nextLine();
		for (int t=0; t<T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();
			long ans = 0;
			int powLen = 1;
			int pow = 1;
			for (int i=A; i<=B; i++) {
				int x = i;
				int len = numLen(i);
				while(powLen < len) {
					powLen++;
					pow*=10;
				}
				HashSet<Integer> seen = new HashSet<Integer>();
				for (int j=0; j<len; j++) {
					if (x<i && x>=A && x<=B && numLen(x) == len && !seen.contains(x)) {
						seen.add(x);
						ans++;
					}
					x = shift(x,pow);
				}
			}
			out.printf("Case #%d: %d\n",t+1,ans);
		}
		out.close();
	}
	public static void main(String[] args) throws FileNotFoundException {
		new C(new Scanner(new File("c.in")),new PrintWriter(new File("c.out")));
	}
}
