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.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class RecycledNumbers {

	public static void main(String[] args) {
		List<String> lines = getline("C:\\Users\\Ami\\Downloads\\C-large.in");
		System.out.println("number of TestCases-->>" + lines.remove(0));
		Process(lines);
	}

	private static void Process(List<String> lines) {
		int i = 1;
		for (String line : lines) {
			int k = 0;
			String[] nums = line.split(" ");
			long A = Long.valueOf(nums[0]);
			long B = Long.valueOf(nums[1]);
			for (long j = A; j < B; j++) {
				String j2 = "" + j;
				for (int x = 1; x <=j2.length(); x++) {
					long num = Long.parseLong(j2.substring(x)
							+ j2.substring(0, x));
					if (num > j && num <= B){
						k++;
						//System.out.println(j2+" : "+num);
					}
						
				}
			}
			System.out.println("Case #" + i + ": " + k);
			i++;
		}

	}

	private static List<String> getline(String path) {
		List<String> ls = new ArrayList<String>();
		try {
			FileInputStream fstream = new FileInputStream(path);
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			while ((strLine = br.readLine()) != null) {
				ls.add(strLine);
			}
			in.close();
		} catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
		}
		return ls;
	}
}
