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.*;
import java.util.*;

public class RecycledNumbers implements Runnable {
	public static void main(String[] args) throws IOException {
		new Thread(new RecycledNumbers()).start();
	}

	public BufferedReader br;

	public StringTokenizer in;

	public PrintWriter out;

	public String nextToken() throws IOException {
		while (in == null || !in.hasMoreTokens()) {
			in = new StringTokenizer(br.readLine());
		}

		return in.nextToken();
	}

	public int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}

	int[] was;
	int[] count;
	long ans;

	int A, B;

	public void go(int i, int c) {
		if (i < A || i > B)
			return;

		if (was[i] > 0)
			return;

		ans += count[c];
		was[i] = c;
		count[c]++;
		String s = "" + i;
		for (int j = 0; j < s.length() - 1; j++) {
			String t = s.substring(j + 1) + s.substring(0, j + 1);
			if (t.charAt(0) != '0') {
				go(Integer.parseInt(t), c);
			}
		}
	}

	public void solve() throws IOException {
		A = nextInt();
		B = nextInt();
		was = new int[2000001];
		count = new int[2000001];

		ans = 0;

		int c = 0;
		for (int i = A; i <= B; i++) {
			if (was[i] == 0) {
				c++;
				go(i, c);
			}
		}

		out.println(ans);
	}

	public void run() {
		try {
			br = new BufferedReader(new FileReader("C-small.in"));
			out = new PrintWriter("c.out");

			int t = nextInt();
			for (int i = 0; i < t; i++) {
				System.err.println(i);
				out.print("Case #" + (i + 1) + ": ");
				solve();
			}

			out.close();
		} catch (IOException e) {
			e.printStackTrace();
			System.exit(1);
		}
	}
}
