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);
	}
}


public class RecycledPair {
	
	public int num1;
	public int num2;
	
	public RecycledPair(int n1, int n2) {
		this.num1 = n1;
		this.num2 = n2;
	}
	
	@Override
	public String toString() {
		return "(" + num1 + ", " + num2 + ")";
	}
	
	@Override
	public boolean equals(Object obj) {
		if(obj instanceof RecycledPair) {
			RecycledPair other = (RecycledPair) obj;
			if((other.num1 == this.num1 && other.num2 == this.num2) || (other.num2 == this.num1 && other.num1 == this.num2)) {
				return true;
			}
		}
		return false;
	}
	
	@Override
	public int hashCode() {
		int prime = 31;
		return (num1 * prime) + (num2 * prime);
	}
}
