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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Calendar;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class C {

	private static CodeJamIO io = new CodeJamIO();

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		try {
			init();

			int numCases = Integer.parseInt(io.readNextLine()[0]);
			for (int i=1; i <= numCases; i++) {
				io.debug("Solving Case #" + i + "...");
				solveCase(i);
				io.debug("Case #" + i + " solved!");
			}
			
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	/**
	 * Performs initial computations
	 */
	private static void init() {
		
	}

	/**
	 * Solves a Test Case
	 * 
	 * @param caseNum
	 * @throws IOException
	 */
	private static void solveCase(int caseNum) throws IOException {
		// Read input
		String[] tokens = io.readNextLine();
		int a = Integer.parseInt(tokens[0]);
		int b = Integer.parseInt(tokens[1]);
		
		// Do the work
		Set<String> recycled = new HashSet<String>();
		for (int n=a; n<=b; n++) {
			String nstr = Integer.toString(n);
			int firstDigit = Integer.parseInt(nstr.substring(0, 1));
			for (int i=1; i<nstr.length(); i++) {
				if (Integer.parseInt(nstr.substring(i, i+1)) < firstDigit) {
					continue;
				} else {
					int m = Integer.parseInt(nstr.substring(i) + nstr.substring(0, i));
					if (m > n && m >= a && m <= b) {
						recycled.add(Integer.toString(n) + Integer.toString(m));
					}
				}
			}
		}

		// Print results
		io.printCase(caseNum).println(recycled.size());

	}

	/**
	 * Input and Output CodeJam style
	 *
	 */
	private static class CodeJamIO {
		private static BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		private static PrintWriter out = new PrintWriter(System.out, true);
		private static PrintWriter err = new PrintWriter(System.err, true);

		public String[] readNextLine() throws IOException {
			String line = in.readLine();
			String[] tokens = line.split("\\s+");
			return tokens;
		}

		public CodeJamIO printCase(int caseNum) { return print("Case #" + caseNum + ": " ); }
		
		public CodeJamIO print(Object o) { out.print(o); return this; }

		public CodeJamIO print(Object o[]) { return print(concat(o)); }

		public CodeJamIO print(Object o[][]) { return print(concat(o)); }

		public CodeJamIO println() { out.println(); return this; }

		public CodeJamIO printlnCase(int caseNum) { return printCase(caseNum).println(); }
		
		public CodeJamIO println(Object o) { return print(o).println(); }

		public CodeJamIO println(Object o[]) { return print(o).println(); }

		public CodeJamIO println(Object o[][]) { return print(concat(o)).println(); }

		public CodeJamIO println(List<Integer[]> l) { return print(concat(l)).println(); }

		
		private String concat(Object[] o) {
			StringBuffer buf = new StringBuffer(10*o.length);
			
			String delim = "";
			for (int i=0; i < o.length; i++) {
				buf.append(delim).append(o[i]);
				delim = " ";
			}
			return buf.toString();
		}
		
		private String concat(Object[][] o) {
			StringBuffer buf = new StringBuffer(100*o.length);
			for (int i=0; i < o.length; i++) {
				buf.append(concat(o[i])).append("\n");
			}
			return buf.toString();
		}

		private String concat(List<Integer[]> list) {
			StringBuffer buf = new StringBuffer();
			String delim = "";
			for (Object[] elm : list) {
				buf.append(delim).append(concat(elm)).append("\n");
			}
			return buf.toString();
		}

		public void debug(String message) {
			err.println(Calendar.getInstance().getTime() + ": " + message);
		}

		public void debug(String message, Object[] o) {
			err.println(Calendar.getInstance().getTime() + ": " + message);
			err.println("\t" + concat(o));
		}

		public void debug(String message, Object[][] o) {
			err.println(Calendar.getInstance().getTime() + ": " + message);
			String values = concat(o);
			err.println("\t" + values.replaceAll("\n", "\n\t"));
		}

		public void debug(String message, List<Integer[]> list) {
			err.println(Calendar.getInstance().getTime() + ": " + message);
			String values = concat(list);
			err.println("\t" + values.replaceAll("\n", "\n\t"));
		}

	}

}
