import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

import java.io.File;
import java.io.PrintWriter;
import java.util.Scanner;


public class RecycledNumbers {

	/**
	 * @param args
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(new File("C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter("C-small.out");
		
		int tc = sc.nextInt();
		for(int t=1; t<=tc; t++){
			int A = sc.nextInt();
			int B = sc.nextInt();
			pw.println("Case #" + t + ": " + count(A,B));
		}
		pw.close();
		sc.close();
	}

	private static long count(int a, int b) {
		boolean[] flag = new boolean[b-a+1];
		long gsum = 0;
		for(int v=Math.max(a, 12); v<b; v++){
			long sum = 1;
			int i = v;
			if(flag[i-a]) continue;
			int exp = 1;
			while(i>0){
				i/=10;
				exp *= 10;
			}
			i = v;
			for(int e=10; e<exp; e*=10){
				int right = i%e;
				if(right < (e/10)) continue;
				int left = i/e;
				int num = right * (exp/e) + left;
				if(num == i) break;
				if(num >= a && num <= b){
					flag[num-a] = true;
					sum++;
				}
			}
			gsum += (sum*(sum-1)/2);
		}
		return gsum;
	}

}
