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.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;


public class RecycledNumbers {

	public static void main(String[] args){
		List<Integer> res = new ArrayList<Integer>();
		try {
			FileInputStream fstream = new FileInputStream("C-large.in");
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			int cases = Integer.valueOf(br.readLine());
			for(int i = 0; i < cases; i++) {
				String line = br.readLine();
				int min = Integer.valueOf(line.split("[ \r\n\t]+")[0]);
				int max = Integer.valueOf(line.split("[ \r\n\t]+")[1]);
				res.add(solve(min, max));
			}
			in.close();
		} catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
		}
		
		try {
			// Create file
			File fout = new File("out.txt");
			FileWriter fstream = new FileWriter(fout);
			BufferedWriter out = new BufferedWriter(fstream);
			for (int i = 0; i < res.size(); i++){
				out.write("Case #" + (i+1) + ": " + res.get(i)); 
				out.newLine();
			}
			// Close the output stream
			out.close();
		} catch (Exception e) {// Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}

	}
	
	static int solve(int min, int max){
		//find number of digits
		int tmp = min;
		int size = 0;
		while(tmp > 0){
			tmp /= 10;
			size++;
		}
		if(size == 1)
			return 0;
		int res = 0;
		for(int i = min; i <= max; i++){
			int[] digits = toDigits(i, size);
			Set<Integer> candidates = asNumbers(digits);
			for(int candidate : candidates){
				if(candidate > i && candidate >= min && candidate <= max)
					res++;
			}
		}
		return res;
	}
	
	static int[] toDigits(int i, int size){
		int[] res = new int[size];
		int counter = size-1;
		while(i > 0){
			res[counter--] = i%10;
			i /= 10;
		}
		return res;
	}
	
	static Set<Integer> asNumbers(int[] digits){
		Set<Integer> res = new HashSet<Integer>();
		int tmp = 0;
		for(int i = 0; i < digits.length; i++){
			tmp *= 10;
			tmp += digits[i];
		}
		for(int i = 0; i < digits.length-1; i++){
			int mod = tmp%10;
			tmp /= 10;
			for(int j = 0; j < digits.length-1; j++){
				mod *= 10;
			}
			tmp += mod;
			res.add(tmp);
		}
		return res;
	}
	
}
