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 jpt.codejam;

import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Codejam2012 {
	static void solve_Qual_B() throws Exception {
		Scanner in = new Scanner(System.in);
		PrintStream out = System.out;
		
		int cases = in.nextInt();
		for (int nCase = 1; nCase <= cases; ++nCase) {
			int N = in.nextInt();
			int S = in.nextInt();
			int p = in.nextInt();
			int res = 0;
			for (int i=0; i<N; ++i) { 
				int t = in.nextInt();

				int max1 = (t+2)/3;
				int max2 = (t+4)/3;
				if (t<=1 || t>=29) max2 = -1;
				
				if (max1 >= p) ++res;
				else if (max2 >= p && S > 0) {
					++res;
					--S;
				}
			}
			out.printf("Case #%d: %d\n", nCase, res);
		}
	}

	
	static void solve_Qual_C() throws Exception {
		Scanner in = new Scanner(System.in);
		PrintStream out = System.out;
		
		int[] ten = new int[8];
		ten[0] = 1;
		for (int i=1; i<ten.length; ++i) ten[i] = ten[i-1]*10;
		
		
		int cases = in.nextInt();
		for (int nCase = 1; nCase <= cases; ++nCase) {
			int A = in.nextInt();
			int B = in.nextInt();
			int res = 0;
			Set<Integer> ms = new HashSet<Integer>();
			for (int n=A; n<=B; ++n) {
				int d = 1;
				for (int aux=10; aux<=n; aux*=10) ++d;
				ms.clear();
				for (int k=1; k<d; ++k) {
					int q = n % ten[k];
					if (q<ten[k-1]) continue;
					int p = n / ten[k];
					int m = q * ten[d-k] + p;
					if (A<=m && B>=m && n!=m && !ms.contains(m)) ++res;
					ms.add(m);
				}
			}
			out.printf("Case #%d: %d\n", nCase, res/2);
		}
	}
	
	public static void main(String[] args) throws Exception {
		//solve_Qual_B();
		solve_Qual_C();
		//solve_1A_A();
		//solve_1A_B();
		//solve_1A_C();
	}
}
