import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Scanner;

public class three {
	public static void main(String[] args) {
		try {
			Scanner in = new Scanner(new File(args[0]));
			PrintWriter out = new PrintWriter( new FileWriter(args[1]));
			int T = in.nextInt();
			for(int i=0;i<T;i++)
			{
				int res = 0;
				String A = in.next();
				int a = Integer.parseInt(A);
				int b = in.nextInt();

				int l = A.length();

				for(int n=a;n<b;n++)
				{
					HashMap<String,Integer> ms;
					ms=shift(n,l);
			        for(String key : ms.keySet()) {
			            int m = ms.get(key);
						if(n<m && m<=b)
							res++;
			        }
				}
				out.println("Case #"+(i+1)+": "+res);
			}
			out.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private static HashMap<String,Integer> shift(int n, int l) {
		HashMap<String,Integer> ms = new HashMap<String,Integer>();
		String N = String.valueOf(n);
		String m;
		for(int j=1;j<l;j++)
		{
			m = N.substring(j)+N.substring(0,j);
			ms.put(m,Integer.parseInt(m));
		}
		return ms;
	}
}
