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;
	}

}

package zid;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;
import java.util.StringTokenizer;

public class Cycle {

	
	HashSet<String> set = new HashSet<String>();
	
	public static void main(String[] args) {
		Cycle c = new Cycle();
		c.start(args[0]);
	}


	
private void start(String filename) {
		
		try {
			
			BufferedReader br = new BufferedReader(new FileReader(filename));

			int N = Integer.parseInt(br.readLine());
			int n = 1;
			while (n <= N) {
			
				StringTokenizer st = new StringTokenizer(br.readLine());
				int A = Integer.parseInt(st.nextToken());
				int B = Integer.parseInt(st.nextToken());
				int COUNT = 0;
				set.clear();
				for (int i = A; i <= B; i++) {
					String iNum = "" + i;
					int iDigitCount = iNum.length();
					for (int j = 0; j < iDigitCount; j++) {
						iNum = getRecycled(iNum);
						int recycled = Integer.parseInt(iNum);
						int recycledDigitCount = iNum.length();
						
						if ( (i < recycled) &&
								(A <= i && recycled <= B) &&
								(recycledDigitCount == iDigitCount)
								)
							{
							String entry = String.format("%d|%d", i, recycled);
							if (!set.contains(entry)) {
								set.add(entry);
								COUNT++;
								//System.out.println(String.format("%d | %d", i,
								//		recycled));
							}
							//else
							//	System.out.println(entry);
						}
					}

				}
				
				System.out.println(String.format("Case #%d: %s", n,COUNT));
				
				n++;
				}
			
		} catch (NumberFormatException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}



private String getRecycled(String i) {
	String s = new String(i + "");
	
	String s2 = s.substring(s.length() - 1);
	s = s.substring(0, s.length()-1);
	s = s2 + s;
	
	
	return s;
}

	
	
}
