import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

package lt.kasrud.gcj.common;


import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class IO {
  public static Data readFile(String filename) throws IOException {
    Data results = new Data();

    BufferedReader reader = new BufferedReader(new FileReader(filename));
    String line = null;
    while ((line = reader.readLine()) != null) {
      results.add(new Record(line));
    }

    reader.close();
    return results;
  }

  private static String formatCase(int caseNr, String output) {
    return String.format("Case #%d: %s", caseNr, output);
  }

  public static void writeFile(String filename, List data) throws IOException {
    BufferedWriter writer = new BufferedWriter(new FileWriter(filename));
    for (int i = 0; i < data.size(); i++) {
      String output = formatCase(i + 1, data.get(i).toString());
      writer.write(output + "\n");
    }
    writer.close();
  }

  public static class Data {
    List<Record> records = new ArrayList<Record>();

    public void add(Record record){
      records.add(record);
    }

    public String getString(int recNr, int i){
      Record record = records.get(recNr);
      return record.getString(i);
    }

    public Integer getInt(int recNr, int i){
      Record record = records.get(recNr);
      return record.getInt(i);
    }

    public List<Record> getRecords(int from){
      return getRecords(from, records.size());
    }

    public List<Record> getRecords(int from, int to){
      return records.subList(from, to);
    }

  }

  public static class Record {
    String raw;
    String[] tokens;

    Record(String raw) {
      this(raw, " ");
    }

    Record(String raw, String separator) {
      this.raw = raw;
      tokens = raw.trim().split(separator);
    }

    public String getRaw() {
      return raw;
    }

    public String getString(int i) {
      return tokens[i];
    }

    public int getInt(int i) {
      return Integer.valueOf(getString(i));
    }

    public List<String> getStringList(int from){
      return getStringList(from, tokens.length);
    }

    public List<String> getStringList(int from, int to){
      return Arrays.asList(tokens).subList(from, to);
    }

    public List<Integer> getIntList(int from){
      return getIntList(from, tokens.length);
    }

    public List<Integer> getIntList(int from, int to){
      List<String> strings = Arrays.asList(tokens).subList(from, to);
      List<Integer> ints = new ArrayList<Integer>(strings.size());
      for (String s : strings){
        ints.add(Integer.valueOf(s));
      }
      return ints;
    }
  }
}
