import java.util.HashMap;
import java.util.HashSet;
import java.util.Scanner;

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam.y12.round0;

import utils.Jam;
import utils.JamCase;

/**
 *
 * @author fabien
 */
public class RecycledNumbers extends Jam {

  public RecycledNumbers(String filename) {
    super(filename);
  }

  @Override
  public JamCase getJamCase(int number) {
    return new Line(this, number, lines[number]);
  }

  private class Line extends JamCase {

    private int a;
    private int b;
    private String line;
    private int count;

    public Line(Jam parent, int number, String line) {
      super(parent, number);
      this.line = line;
    }

    @Override
    public void parse() {
      String[] integers = line.split(" ");
      a = Integer.parseInt(integers[0]);
      b = Integer.parseInt(integers[1]);
    }

    @Override
    public void solve() {
      count = 0;
      for (int i = a; i <= b; i++) {
        countRecycles(i);
      }
      result = Integer.toString(count);
    }

    private void countRecycles(int number) {
      int len = 0;
      int n = number;
      while (n != 0) {
        n /= 10;
        len++;
      }
      n = number;
      int exp = (int) Math.pow(10, len - 1);
      for (int i = 0; i < len; i++) {
        n = nextRecycled(n, exp);
        if (n == number) {
          return;
        }
        if (n <= b && n > number) {
          count++;
        }
      }
    }

    private int nextRecycled(int i, int exp) {
      int r = i % 10;
      i = (i - r) / 10;
      i += r * exp;
      return i;
    }
  }
}
