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 inam.qual;

import java.io.File;
import java.io.FileInputStream;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {
    public void go() {
        Scanner in = new Scanner(System.in);
        int cc = in.nextInt();
        for (int c = 1; c <= cc; c++) {
            int val = 0;
            int a = in.nextInt();
            int b = in.nextInt();
            Set<String> set = new HashSet<String>();
            for (int i = a; i <= b; i++) {
                String str = String.valueOf(i);
                for (int j = 1; j < str.length(); j++) {
                    String re = str.substring(j, str.length()) + str.substring(0, j);
                    if (str.equals(re) || re.startsWith("0") || Integer.parseInt(re) > b || a > Integer.parseInt(re)) {
                        continue;
                    }
                    String key = "";
                    if (Integer.parseInt(str) < Integer.parseInt(re)) {
                        key = str + " " + re;
                    } else {
                        key = re + " " + str;
                    }
                    set.add(key);
                }
            }
            val = set.size();
            System.out.println("Case #" + c + ": " + val);
        }
    }
    public static void main(String[] args) {
        try {
            String p = "C-large";
            String r = "qual";
            System.setIn(new FileInputStream(new File(r, p + ".in")));
            if (1 == 1) {
                System.setOut(new PrintStream(new File(r, p + ".out")));
            }
            new C().go();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
