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

class c {
	public static void main(String[] args) throws FileNotFoundException {
		
		Scanner in = new Scanner(new File("1.in"));
		PrintStream out = new PrintStream(new File("1.out"));
		int T = Integer.parseInt(in.nextLine());

		for (int tt = 0; tt < T; tt++) {

			int a=in.nextInt(),b=in.nextInt();
			HashSet<Long> sols=new HashSet<Long>();
			for(int n=a;n<=b;n++)
			{

				String str="";
				str+=n;
				int len=str.length();
				for(int j=1;j<len;j++)
				{
					
					int p1,p2,m;
					p1=Integer.parseInt(str.substring(0,j));
					p2=Integer.parseInt(str.substring(j));
					m=p1=Integer.parseInt(""+p2+p1);
					if(m>n && m<=b )
						sols.add(n*2000001l+m);
				}
			}
			out.printf("Case #%d: %d\n", tt + 1, sols.size());

		}
	}
}