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.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Scanner;

public class  Main
{
	private static int recycled(int n, int m)
	{
		String sN = (new Integer(n)).toString();
		String sM = (new Integer(m)).toString();
		int nL = sN.length();
		int mL = sM.length();
		
		HashMap<Integer, HashSet<Integer>> pairs = new HashMap<Integer, HashSet<Integer>>();
		
		for(int i = 0; i < nL; i++)
		{
			String swap = sN.substring(nL-1-i);
			String test = swap + sN.substring(0, nL-1-i);
			int testS = Integer.parseInt(test);
			if(testS == m)
			{
				if(!pairs.containsKey(testS))
				{
					HashSet<Integer> newSet = new HashSet<Integer>();
					newSet.add(m);
					pairs.put(testS, newSet);
				}
				else
				{
					pairs.get(testS).add(m);
				}
			}
		}
		
		Iterator<Integer> iter = pairs.keySet().iterator();
		int sum = 0;
		while(iter.hasNext())
		{
			sum += pairs.get(iter.next()).size();
		}
		
		return sum;
	}
	
	
	public static void main(String[] args)
	{
		Scanner inScan = new Scanner(System.in);
		
		int T = inScan.nextInt();
		//System.out.println(T);
		
		for(int t = 0; t < T; t++)
		{
			int A, B;
			
			A = inScan.nextInt();
			B = inScan.nextInt();
			//System.out.println(A);
			//System.out.println(B);
			int sum = 0;
			for(int n = A; n <= B; n++)
			{
				for(int m = B; m > n; m--)
				{
					sum += recycled(n, m);
					//System.out.println("LOOP");
				}
			}
			
			System.out.println("Case #" + (t+1) + ": " + sum);
		}
	}
}