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 google;

import hack.Tool;

import java.util.HashSet;
import java.util.List;

/**
 * http://code.google.com/codejam/contest/dashboard?c=1460488#s=p2 a pair of
 * distinct positive integers (n, m) is recycled if you can obtain m by moving
 * some digits from the back of n to the front without changing their order.
 * 
 * @author y
 */
public class RotateNumbers {

	/**
	 * Given integers A and B with the same number of digits and no leading
	 * zeros, how many distinct recycled pairs (n, m) are there with A ¡Ü n < m ¡Ü
	 * B?
	 * 
	 * @param min
	 * @param max
	 */
	static int pairsRotated  (int min, int max){
		if(max<10 || max<=min){return 0;}
		int ret = 0;
		
		for(int j=min; j<max; j++){
			String s = String.valueOf(j);

			HashSet<Integer> set = new HashSet<Integer>();
			
			for(int k=1; k<s.length(); k++){//iterate each digit
				
				//rotate from bigger digit
				if(s.charAt(k)>=s.charAt(0)){ //=212-> 221. ignore repeat, count (12, 21) once
					
					String rotateString = s.substring(k) + s.substring(0, k);	
					
					int rotate = Integer.valueOf(rotateString);
					
					if((j<rotate) && (rotate <=max)){ //rotate>=min
						if(!set.contains(rotate)){
							set.add(rotate);
							ret ++; 
						}						
						//System.out.println(j + "-> " + rotate);
					}
				}
			}
		}
		
		return ret;
	}

	public static void main(String[] args) {
		

		Tool.createOutput();

		List<String[]> input = Tool.readLine();

		for (int j = 0; j < input.size(); j++) {

			String[] line = input.get(j);
			int n =  Integer.parseInt(line[0]);
			int k =  Integer.parseInt(line[1]);
			int ret = pairsRotated(n, k);

			String outputLine = "Case #" + (j+1) + ": " + ret;
			System.out.println(outputLine);
			Tool.writeOutput(outputLine);
		}	


	}

}
