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.io.*;

public class C {

	public static void main(String[] args) throws Exception {
		BufferedReader in = new BufferedReader(new FileReader(args[0]));
		in.readLine();
		
		int caseNum = 0;
		while (in.ready()) {
			solve(++caseNum, in.readLine());
		}
	}
	
	public static void solve(int caseNum, String caseInput) {		
		String[] inputSegments = caseInput.split(" ");
		String i1 = inputSegments[0];
		String i2 = inputSegments[1];
		int v1 = Integer.parseInt(i1);
		int v2 = Integer.parseInt(i2);
		int d = i1.length();
		int baseValue = (int) Math.pow(10, d);
		
		HashSet<String> uniquePair = new HashSet<String>();
		if (baseValue == 1) {
			// do nothing
		} else {
			String n;
			int value;
			for (int i = v1; i <= v2; ++i) {
				n = String.valueOf(i);
				for (int j = 1; j < d; ++j) {
					value = Integer.parseInt(n.substring(j) + n.substring(0, j));
					if (value >= v1 && value <= v2 & value != i) {
						uniquePair.add(n + " - " + value);
					}
				}
			}
		}
		System.out.printf("Case #%d: %d\n", caseNum, uniquePair.size()/2);
	}
}