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 recycledNumbers;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {
	
	public static String processaCaso(String linha, int i) {
		String[] nums = linha.split(" ");
		int a = Integer.parseInt(nums[0]);
		int b = Integer.parseInt(nums[1]);
		int numDistincPairs = 0;
		int lenNum = Integer.toString(a).length()-1;
		Set<Integer> ms = new HashSet<Integer>();
		for (; a < b; a++) {
			String n = Integer.toString(a);
			ms.clear();
			for (int j = 0; j < lenNum; j++) {
				int indice = lenNum-j;
				String strM = n.substring(indice)+n.substring(0,indice);
				int m = Integer.parseInt(strM);
				if (!(a < m && m <= b)) continue;
				ms.add(m);
			}
			numDistincPairs += ms.size();
		}
		return String.format("Case #%d: %d", i, numDistincPairs);
	}

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
        Scanner scan = new Scanner(new File(args[0]));
        int numTestCases = scan.nextInt();
        scan.nextLine();
        Writer saida = new FileWriter(args[0]+".out");
		for (int i = 1 ; i <= numTestCases; i++) {
			saida.write(processaCaso(scan.nextLine(),i)+"\n");
		}
		saida.close();
	}

}
