import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStreamReader;


public class Recycled {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			System.setIn(new FileInputStream("../C-large.in"));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			System.exit(0);
		}
		
		InputStreamReader inp = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(inp);
		  
		String line = "";
		int inputs = 0;
	  
		try{
			line = br.readLine();
			inputs = Integer.parseInt( line );
		} catch(Exception x){
			System.err.println(x);
			System.exit(1);
		}
		
		String[] data = {};
		for(int i=0; i < inputs; i++){
			int count = 0;
			
			try{
				line = br.readLine();
				data = line.split(" ");
			} catch(Exception x){
				System.err.println(x);
				System.exit(1);
			}
			
			int a = Integer.parseInt(data[0]);
			int b = Integer.parseInt(data[1]);

			
			for(int n=a; n < b; n++){
				String m = ""+n;
				String[] dup = new String[data[0].length()];
				int next = 0; //position to insert into dup
				
				for(int k=0; k < data[0].length(); k++){
					m = Recycled.shuffle(m);
					
					if(a <= n && n < Integer.parseInt(m) && Integer.parseInt(m) <= b){
						boolean found = false;
						for(int x=0; x<next; x++){
							if(dup[x].equals(m)){
								found = true;
							}
						}
						
						if(!found){
							count++;
							dup[next] = m;
							next++;
						}
					}
				}
			}
			
			System.out.println("Case #" + (i+1) + ": " + count);
		}
	}
	
	public static String shuffle(String in){
		return in.substring(1) + in.substring(0, 1);
	}

}
