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.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.StringTokenizer;


public class Main {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws NumberFormatException 
	 */
	public static void main(String[] args) throws NumberFormatException, IOException {
		
		
		//BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
		BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream("c:\\input.txt")));
		int cases = Integer.parseInt(reader.readLine());
		for(int i=0; i<cases; i++){
			String inputString = reader.readLine();		
			StringTokenizer st = new StringTokenizer(inputString);
			
			int numOfRecycledPairs = 0;
			int A = Integer.parseInt(st.nextToken());
			int B = Integer.parseInt(st.nextToken());
			int numOfDigits = Integer.toString(A).length();
			
			HashSet<Integer> processedNumber = new HashSet<Integer>();
			//System.out.println(A + " " + B);
			for(int a=A; a<=B; a++) {

				if(processedNumber.contains(a) || isAllTheSameDigits(a))
					continue;

				
				processedNumber.add(a);
				int eligibleNumbers = 1;
				int numberToProcessed = a;
				//System.out.print("numberToProcessed:" + numberToProcessed +",");
				for(int j=0; j<numOfDigits-1; j++) {
					numberToProcessed = shift(numOfDigits, numberToProcessed);
					//System.out.print("numberToProcessed:" + numberToProcessed);
					if(isCandidate(A, B, processedNumber, numberToProcessed)) {
						processedNumber.add(numberToProcessed);
						++eligibleNumbers;
					}
				}
				//System.out.println("");
				
				numOfRecycledPairs += (eligibleNumbers*(eligibleNumbers-1)/2);
				
			}
			
			System.out.println("Case #"+(i+1)+": "+numOfRecycledPairs);
		}

	}
	
	public static boolean isAllTheSameDigits(int number) {
		String sNumber = Integer.toString(number);
		char digits[] = sNumber.toCharArray();
			
		char significatDigits = digits[0];
		for(int i=1; i<digits.length; i++) {
			if(digits[i]!= significatDigits )
				return false;
		}
		return true;
	}
	
	public static int shift(int numOfDigits, int number) {
		return (int)((number%10)*Math.pow(10, numOfDigits-1)) + number/10;
	}
	
	public static boolean isCandidate(int A, int B, HashSet<Integer> processedNumber, int number) {
		if(number >=A && number <=B && !processedNumber.contains(number))
			return true;
		else
			return false;
	}

}
