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;
	}

}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;

public class RecycledPair {
	public static void main(String[] args) {

		try {

			BufferedReader br = new BufferedReader(new FileReader("input.txt"));
			BufferedWriter bw = new BufferedWriter(new FileWriter("output.txt"));
			int N;
			N = Integer.parseInt(br.readLine());
			int k,i,j;
			HashSet<Integer> set;
			for (k = 0; k < N; k++) {
				
				String[] line = br.readLine().split(" ");
				int A = Integer.parseInt(line[0]);
				int B = Integer.parseInt(line[1]);
				
				
				int counter = 0;
				

				for (i = A; i < B; i++) {
					set = new HashSet<Integer>();
					updateSet(set, i);
					for (j = i + 1; j <= B; j++) {
						if (set.contains(j)) {
							counter++;
						}
					}
				}
				bw.write("Case #" + (k+1) + ": " + counter);
				bw.newLine();
				// showSet(set);
			}

			br.close();
			bw.close();

		} catch (IOException io) {
		}

	}

	private static void updateSet(HashSet<Integer> set, int num) {

		String numStr = num + "";
		char[] numChar = numStr.toCharArray();

		int i, j;

		for (i = numChar.length - 1; i >= 1; i--) {

			if (numChar[i] != '0') {

				char[] newNum = new char[numChar.length];
				j = i;
				int counter = 0;
				newNum[counter] = numChar[j];
				counter++;
				while (counter < numChar.length) {
					if (j < numChar.length - 1) {
						j++;
					} else {
						j = 0;
					}
					newNum[counter] = numChar[j];
					counter++;
				}
				set.add(Integer.parseInt(new String(newNum)));
			}
			//set.add(num);
		}
		set.add(num);
	}
/*
	private static void showSet(HashSet<Integer> set) {

		for (Integer s : set) {
			System.out.println(s);
		}
	}
*/
}
