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){}
	}
}
package compete;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

public class Recycle {
	private static void print(String sth) {
		System.out.println(sth);
	}

    private static int recycle(int A, int B) {
        
        int n=0;
        for (int i=A;i<B;i++) {
            String t = i+"";

            ArrayList<Integer> l = new ArrayList<Integer>();
            for (int k=0;k<t.length();k++) {
                char c = t.charAt(0);
                t = t.substring(1)+c;	
                if (t.charAt(0)=='0') continue;
                int ti = Integer.parseInt(t);
                if (ti>B||ti<=i) continue;
                if (!l.contains(ti)) {
                	l.add(ti);
                	n++;
                }
            }
        }

        return n;
    }

	public static void main(String args[]) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("input.txt"));
		
		int num = Integer.parseInt(in.readLine());
		
		for (int i=0;i<num;i++) {
			String sentence = in.readLine();
			Scanner s = new Scanner(sentence);
			
			int A = s.nextInt();
			int B = s.nextInt();
			
			print("Case #"+(1+i)+": "+recycle(A,B));
		}	
	}
}
