import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

package qualification;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;

public class ProblemC {
	
	public static int solve(int A, int B){
		
		int count = 0;
		
		for (int i = A; i <= B; i++){
			String number = String.valueOf(i);
			String s = number + number;
			for (int j = 1; j < number.length(); j++){
				int newnumber = Integer.parseInt(s.substring(j, j + number.length()));
				if ((newnumber > i) && (newnumber <= B))
					count++;
			}
		}
		
		return count;
	}
	
	public static void main(String[] args){
		try{
			BufferedReader br = new BufferedReader(new FileReader("C-small-attempt0.in"));
			BufferedWriter bw = new BufferedWriter(new FileWriter("outputC"));
			String line = br.readLine();
			int ans = 0;
			int num = Integer.parseInt(line);
			
			for (int i = 0; i < num; i++){
				line = br.readLine();
				String[] segs = line.split("\\s+");
				ans = solve(Integer.parseInt(segs[0]), Integer.parseInt(segs[1]));
				bw.write("Case #" + (i+1) + ": " + ans + "\n");
			}
			
			br.close();
			bw.close();
		}catch(Exception e){
			e.printStackTrace();
		}
	}

}
