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.HashSet;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;

public class ReadFile {
	public static void main(String[] args) throws Exception {
		String srcFile = "C:" + File.separator + "Documents and Settings"
				+ File.separator + "rohit" + File.separator + "My Documents"
				+ File.separator + "Downloads" + File.separator
				+ "C-small-attempt1.in.txt";
		String destFile = "C:" + File.separator + "Documents and Settings"
				+ File.separator + "rohit" + File.separator + "My Documents"
				+ File.separator + "Downloads" + File.separator
				+ "C-small-attempt0.out";
		File file = new File(srcFile);
		List<String> readData = new ArrayList<String>();
		FileReader fileInputStream = new FileReader(file);
		BufferedReader bufferedReader = new BufferedReader(fileInputStream);
		StringBuilder stringBuilder = new StringBuilder();
		String line = null;
		while ((line = bufferedReader.readLine()) != null) {
			readData.add(line);
		}
		stringBuilder.append(generateOutput(readData));
		File writeFile = new File(destFile);
		if (!writeFile.exists()) {
			writeFile.createNewFile();
		}
		FileWriter fileWriter = new FileWriter(writeFile);
		BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
		bufferedWriter.write(stringBuilder.toString());
		bufferedWriter.close();
		System.out.println("output" + stringBuilder);
	}

	/**
	 * @param number
	 * @return
	 */
	private static String generateOutput(List<String> number) {
		StringBuilder stringBuilder = new StringBuilder();
		for (int i = 0; i < number.size(); i++) {
			if (i == 0) {
				continue;
			} else {
				String tempString = number.get(i);
				String[] temArr = tempString.split(" ");
				stringBuilder.append("Case #" + i + ": ");
				stringBuilder.append(getRecNumbers(temArr[0], temArr[1]));
				stringBuilder.append("\n");
			}
		}
		if (stringBuilder.length() > 0) {
			stringBuilder.deleteCharAt(stringBuilder.length() - 1);
		}
		return stringBuilder.toString();
	}

	// /* This method accepts method for google code jam */
	// private static String method(String value) {
	// int intValue = Integer.valueOf(value);
	// double givenExpr = 3 + Math.sqrt(5);
	// double num = Math.pow(givenExpr, intValue);
	// String valArr[] = (num + "").split("\\.");
	// int finalVal = Integer.valueOf(valArr[0]) % 1000;
	//
	// return String.format("%1$03d", finalVal);
	//
	// }
	//
	// /* This method accepts method for google code jam */
	// private static String method2(String value) {
	// StringTokenizer st = new StringTokenizer(value, " ");
	// String test[] = value.split(" ");
	// StringBuffer str = new StringBuffer();
	//
	// for (int i = 0; i < test.length; i++) {
	// // test[i]=test[test.length-i-1];
	// str.append(test[test.length - i - 1]);
	// str.append(" ");
	// }
	// str.deleteCharAt(str.length() - 1);
	// String strReversedLine = "";
	//
	// while (st.hasMoreTokens()) {
	// strReversedLine = st.nextToken() + " " + strReversedLine;
	// }
	//
	// return str.toString();
	// }

	private static int getRecNumbers(String no1, String no2) {

		int a = Integer.valueOf(no1);
		int b = Integer.valueOf(no2);
		Set<String> dupC = new HashSet<String>();
		for (int i = a; i <= b; i++) {
			int n = i;
			List<String> value = findPerm(n);
			for (String val : value) {
				if (Integer.valueOf(val) <= b && Integer.valueOf(val) >= a
						&& n < Integer.valueOf(val)) {
					dupC.add(n + "-" + val);
				}
			}
		}
		return dupC.size();
	}

	private static List<String> findPerm(int num) {
		String numString = String.valueOf(num);
		List<String> value = new ArrayList<String>();
		for (int i = 0; i < numString.length(); i++) {
			String temp = charIns(numString, i);
			if (!temp.equalsIgnoreCase(numString)) {
				value.add(charIns(numString, i));
			}
		}
		return value;

	}

	public static String charIns(String str, int j) {
		String begin = str.substring(0, j);
		String end = str.substring(j);
		return end + begin;
	}
}
import java.util.*;
import java.io.*;

public class ProblemC {
	final long MOD = 1000003;
	final int MAX_LEN = 500000;

	long pow(long x, long y) {
		if (y == 0)	return 1;
		long res = pow(x, y/2);
		res = (res * res) % MOD;
		if (y % 2 == 1) res = (res * x) % MOD;
		return res;
	}

	long inv(long x) {
		return pow(x, MOD-2);
	}

	long[] fact, invfact;

	void precalc() {
		fact = new long[MAX_LEN + 1];
		fact[0] = 1;
		for (int i=1; i<=MAX_LEN; i++)
			fact[i] = (i * fact[i-1]) % MOD;
		invfact = new long[MAX_LEN + 1];
		invfact[0] = 1;
		for (int i=1; i<=MAX_LEN; i++)
			invfact[i] = (inv(i) * invfact[i-1]) % MOD;
	}

	long comb(int N, int M) {
		long res = fact[N];
		res = (res * invfact[M]) % MOD;
		res = (res * invfact[N-M]) % MOD;
		return res;
	}

	class Testcase {
		long ans;

		public Testcase() {
		}

		public Testcase(int seed) {
			Random rnd = new Random(seed);
		}

		String s;

		int A =0;
		int B = 0;


		public void loadInput(Scanner sc) {
//			s = sc.next();
			A = sc.nextInt();
			B = sc.nextInt();
		}


		public void solveSlow() {
		}

		String getShift(String sa) {
			String sb = sa.substring(sa.length() -1 ) + sa.substring(0,sa.length()-1);
			return sb;
//			return Integer.parseInt(s);
		}

		int getMaxDivide(int a) {
			int m = 1;
			while(a>=10){
				a=a/10;
				m=m*10;
			}
			return m;
		}

		HashMap<String, ArrayList<String> > map = new HashMap<String, ArrayList<String>>();

		public ArrayList<String> getShifts(String sa) {
			ArrayList<String> arr = null;
			arr = map.get(sa);
			if(  arr == null ) {

				arr = new ArrayList<String>();

				arr.add(sa);

				String sn = getShift(sa);

				while(!sn.equals(sa)) {
					arr.add(sn);
					sn = getShift(sn);
				}

				for(String ai : arr) {
					map.put(ai, arr);
				}
			}
			return arr;
		}


		boolean isCycle(int a, int b) {
			int am = getMaxDivide(a);
			if(b/am!=0) {
				return true;
			} else {
				return false;
			}
		}


		public void solveFast() {
			for(int n =A;n<B;n++) {
				String sn = String.format("%d", n);
				ArrayList<String> arr = getShifts(sn);
				for(String ai : arr ) {
					int m = Integer.parseInt(ai) ;
					if(m>n && m<=B && isCycle(n,m) ) {
						ans++;
					}

				}

			}

		}

		public void printSelf(PrintWriter pw) {
			System.out.println(ans);
			pw.println(ans);
		}

		public boolean sameAnswers(Testcase other) {
			return false;
		}
	}

	final String AFTER_CASE = " ";

	public void go() throws Exception {

		Scanner sc = new Scanner(new FileReader("src\\input.txt"));
		PrintWriter pw = new PrintWriter(new FileWriter("src\\output.txt"));

		int caseCnt = sc.nextInt();

		for (int caseNum = 0; caseNum < caseCnt; caseNum++) {
			System.out.println("solving case " + caseNum);

			Testcase tc = new Testcase();

			tc.loadInput(sc);
			tc.solveFast();

			pw.print("Case #" + (caseNum + 1) + ":");
			pw.print(AFTER_CASE);

			tc.printSelf(pw);
		}

		pw.flush();
		pw.close();
		sc.close();
	}

	public void stresstest() {
		int it = 0;
		Random rnd = new Random();
		while (true) {
			it++;
			if (it % 1000 == 0)
				System.out.println(it + " iterations");

			int seed = rnd.nextInt();

			Testcase tc1 = new Testcase(seed);
			tc1.solveFast();

			Testcase tc2 = new Testcase(seed);
			tc2.solveSlow();

			if (!tc1.sameAnswers(tc2)) {
				System.out.println("ERROR: it failed");
				System.exit(0);
			}
		}
	}

	public static void main(String[] args) throws Exception {
		new ProblemC().go();
	}
}
