import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.util.*;
import java.util.regex.*;
import java.text.*;
import java.math.*;
import java.io.*;

public class RecycledNumbers {

	private final static String FILE_IN = RecycledNumbers.class.getSimpleName() + ".in";			
	private final static String FILE_OUT = RecycledNumbers.class.getSimpleName() + ".out";			
	
	public static void main(String[] args) throws Exception {
		final Scanner in = new Scanner(new File(FILE_IN));
		final PrintWriter out = new PrintWriter(FILE_OUT);
		final int testCnt = in.nextInt();
		for (int caseNum = 1; caseNum <= testCnt; ++ caseNum){
			final int a = in.nextInt();
			final int b = in.nextInt();			
			final int last [] = new int [b + 1];
			int result = 0;
			for (int i = a; i <= b; ++ i){
				final String s = String.valueOf(i);			
				for (int pos = 1; pos < s.length(); ++ pos){
					final String newNum = s.substring(pos) + s.substring(0, pos);
					final int newInt = Integer.valueOf(newNum);
					if (newInt > i && newInt <= b){
						if (last[newInt] != i){
							++ result;
							last[newInt] = i;
						}
					}
				}
			}
			out.println(String.format("Case #%d: %d", caseNum, result));
		}
		in.close();
		out.close();
	}

}
