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));
	}
}

import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;


public class RecycledNumbers {

	public static void main(String [] args) throws NumberFormatException, IOException {
		java.io.BufferedReader r = new java.io.BufferedReader(
				new java.io.FileReader(
						"C:\\Users\\AhmedMTM\\Desktop\\C-small-attempt0.in"));
		int no = Integer.parseInt(r.readLine());
		int[] results = new int[no];
		Arrays.fill(results, 0);
		for (int t = 0; t < no; t++) {
			String[] input = r.readLine().split(" ");

			int A = Integer.parseInt(input[0]);
			int B = Integer.parseInt(input[1]);
			
			for(int j=B; j>A; j--) {
				for(int k=A; k<j; k++) {
					String one = ""+k;
					String two = ""+j;
					if(one.length() == two.length()) {
						for(int l=0; l<one.length(); l++) {
							if(one.equals(two)) {
								//System.out.println(one);
								results[t]++;
							}
							one = one.substring(one.length()-1, one.length())+one.substring(0, one.length()-1);
						}
					}
				}
			}
			
			try {
				FileWriter outFile = new FileWriter(
						"C:\\Users\\AhmedMTM\\Desktop\\output.txt");
				PrintWriter out = new PrintWriter(outFile);
				for (int i = 0; i < results.length; i++) {
					out.println("Case #"+(i+1)+": "+results[i]);
				}

				out.close();
			} catch (IOException e) {
				e.printStackTrace();
			}

		
		}
	}
}
