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.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {

	public static void readFile() throws FileNotFoundException {
		File f = new File("C-small.in");
		Scanner in = new Scanner(f);
		PrintWriter out = new PrintWriter(new File("C-small"));

		Set<Pair> setOfFound = new HashSet<C.Pair>();
		// List<Pair> setOfFound = new ArrayList<C.Pair>();
		// Set<Pair> setOfNotFound;
		C c = new C();

		// System.out.println(c.new Pair(1, 2).compareTo(c.new Pair(2, 1)));
		// setOfFound.add(c.new Pair(1, 2));
		// setOfFound.add(c.new Pair(2, 1));
		// setOfFound.add(c.new Pair(1, 2));
		// for (Pair p : setOfFound)
		// System.out.println(p);

		int T = in.nextInt();
		// System.out.println("T: " + T);
		int A, B, strLength, newNbInt;
		String nbStr, newNbStr;

		for (int i = 0; i < T; i++) {
			setOfFound = new HashSet<C.Pair>();
			// setOfFound = new ArrayList<C.Pair>();
			// setOfNotFound = new HashSet<C.Pair>();

			A = in.nextInt();
			B = in.nextInt();
			// System.out.println("A: " + A + "--B: " + B);

			if (B > 9) {
				for (int j = A; j <= B; j++) {
					// if (i == 3)
					// System.out.println("j: " + j);
					nbStr = newNbStr = "" + j;

					strLength = nbStr.length();
					for (int k = 0; k < strLength - 1; k++) {
						// if (i == 3)
						// System.out.println("newNbStr1: " + newNbStr);
						newNbStr = newNbStr.charAt(strLength - 1)
								+ newNbStr.substring(0, strLength - 1);

						if (newNbStr.indexOf("0") == 0) {
							continue;
						}
						// if (i == 3)
						// System.out.println("newNbStr: " + newNbStr);
						if (!nbStr.equals(newNbStr)) {
							newNbInt = Integer.parseInt(newNbStr);
							if (newNbInt >= A && newNbInt <= B) {
								setOfFound.add(c.new Pair(j, newNbInt));
								// if (i == 3)
								// System.out.println("added: " + newNbInt);
							}
							// else {
							// setOfNotFound.add(c.new Pair(j, newNbInt));
							// }
						}

					}
				}
			} else {
				// System.out.println("1 digit => finish: 0");
			}

			// System.out.println("Founnnnnnnnnnnnnnnnd / 2: " +
			// setOfFound.size() / 2);
			if (i < T - 1)
				out.println("Case #" + (i + 1) + ": " + setOfFound.size() / 2);
			else
				out.print("Case #" + (i + 1) + ": " + setOfFound.size() / 2);
			// if (i == 3) {
			// for (Pair p : setOfFound)
			// System.out.println(p);
			// }
		}

		out.close();
	}

	public static void main(String[] args) throws FileNotFoundException {
		readFile();

	}

	public class Pair implements Comparable<Pair> {
		int A;
		int B;

		public Pair(int A, int B) {
			this.A = A;
			this.B = B;
		}

		public Pair() {
			// TODO Auto-generated constructor stub
		}

		@Override
		public boolean equals(Object obj) {
			if (obj == null) {
				return false;
			}
			if (getClass() != obj.getClass()) {
				return false;
			}
			final Pair other = (Pair) obj;
			if (this.A == other.A && this.B == other.B || this.A == other.B
					&& this.B == other.A) {
				return true;
			}
			return false;
		}

		@Override
		public int hashCode() {
			int hash = 7;
			hash = 79 * hash + this.A;
			hash = 79 * hash + this.B;
			return hash;
		}

		@Override
		public String toString() {
			return "A = " + A + " || B = " + B;
		}

		@Override
		public int compareTo(Pair other) {
			if (this.A == other.A && this.B == other.B || this.A == other.B
					&& this.B == other.A) {
				return 0;
			}
			return 1;
		}

	}

}
