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.io.*;

public class C {

    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int T;
        T = Integer.parseInt(reader.readLine());
        for (int i = 1; i <= T; i++) {
			String[] input = reader.readLine().split(" ");
            int result = 0;
			int A=Integer.parseInt(input[0]);
			int B=Integer.parseInt(input[1]);
			if(A<10){
				result=0;
			} else if(A<100){
				for(int j=A;j<=B;j++){
					String temp1 = j+"";
					int temp = ( (Integer.parseInt(temp1.charAt(0)+"") + Integer.parseInt(temp1.charAt(1)+"")) * 11 ) - j;
					if(temp > j && temp <=B ){
						++result;
					}
				}
				
			} else if(A<1000){ 
				for(int j=A;j<=B;j++){
					String temp = j+"";
					String temp1 = Character.toString(temp.charAt(2))+Character.toString(temp.charAt(0))+Character.toString(temp.charAt(1));
					String temp2 = Character.toString(temp.charAt(1))+Character.toString(temp.charAt(2))+Character.toString(temp.charAt(0));
					int temp3 = Integer.parseInt(temp1);
					int temp4 = Integer.parseInt(temp2);
					if(j<temp3 && temp3<=B){
						++result;
					}
					if(j<temp4 && temp4<=B){
						++result;
					}
				}
			}
			if (i < T) {
            System.out.println("Case #" + i + ": " + result);
			} else {
            System.out.print("Case #" + i + ": " + result);
			}
		}
		
	}
}