import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import com.sun.org.apache.bcel.internal.generic.AALOAD;

import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class RecycledNum extends JamProblem {
    public static void main(String[] args) throws IOException {
        RecycledNum p = new RecycledNum();
        p.go();
    }

    @Override
    String solveCase(JamCase jamCase) {
        RecNCase ca = (RecNCase) jamCase;
        int res = 0;
        for (int n = ca.A; n < ca.B; n++) {
            String m = "";
            //print("n "+n);
            Set<Integer> bag = new HashSet<>();
            int length = intLength(n);
            for (int t = 1; t < length; t++) {
                int pow = (int) Math.pow(10, t);
                int pow2 = (int) Math.pow(10,length-t);
                int f = (n / pow);
                int s = n - (pow * f);
                int cand = f + (pow2 * s);
                //print("m " + cand);
                if (cand < ca.A || cand > ca.B || cand <= n) {
                    continue;
                }
                if (bag.contains(cand)) {
                    continue;
                }
                if (intLength(cand) != intLength(n)) {
                    continue;
                }
                res++;
                bag.add(cand);
                //print(""+ n+ " " + cand);
            }
        }
        return "" + res;
    }

    private void print(String m) {
        System.out.println(m);
    }

    private int intLength(int n) {
        return Integer.toString(n).length();
    }

    @Override
    JamCase parseCase(List<String> file, int line) {
        RecNCase ca = new RecNCase();
        ca.lineCount = 1;
        String s = file.get(line);
        int[] ints = JamUtil.parseIntList(s, 2);
        ca.A = ints[0];
        ca.B = ints[1];
        return ca;
    }
}

class RecNCase extends JamCase {
    int A, B;
}
