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 edu.nitin.codejam;

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

public class Recycled {

	/**
	 * @param args
	 */
	public static long compute(long A, long B)
	{
		HashSet<String> setUnique = new HashSet<String>();
		long count = 0;
		long noOfDigits = 0;
		
		for(long i = A; i < B; i++)
		{
			noOfDigits = 1;
			long temp = i;
			while(temp/10 != 0)
			{
				noOfDigits++;
				temp = temp/10;
			}
			//System.out.println(i+" "+noOfDigits);
			long m, n;
			for(long k=1;k<noOfDigits;k++)
			{
				n = i;
				int divisor = (int) (Math.pow(10,k));
				int remainder = (int) (i % divisor);
				int quotient = (int) (i / divisor);
				//System.out.println("Results: "+divisor+" "+quotient+" "+remainder);
				m = (long) (remainder * Math.pow(10,(noOfDigits - k)) + quotient);
				if(A<=n && n < m && m <= B && (String.valueOf(n).length() == String.valueOf(m).length())){
					setUnique.add(n+" "+m);
				}
			}
			//System.out.println("Count: "+count);
		}
		return setUnique.size();
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		long A, B, count;
		
		File fin = new File("src/files/c.txt");
		File fout = new File("src/files/c1.txt");
		
		try {
			BufferedReader br = new BufferedReader(new FileReader(fin));
			BufferedWriter bw = new BufferedWriter(new FileWriter(fout));
			long num = Integer.parseInt(br.readLine());
			for(int k=1;k<=num;k++)
			{
				String[] text = br.readLine().split(" ");
				A = Long.parseLong(text[0]);
				B = Long.parseLong(text[1]);
				count = compute(A,B);
				bw.write("Case #"+k+": "+count);
				bw.write("\n");
			}
			bw.flush();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (NumberFormatException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

}
