import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

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

/**
 * @author Ivan Romanov
 */
public class C {

    private String solve() throws IOException {
        int a = nextInt();
        int b = nextInt();
        int ans = 0;
        for (int i = a; i < b; i++) {
            if (recycle.containsKey(i)) {
                for (int j : recycle.get(i)) {
                    if (j <= b) {
                        ans++;
                        // System.out.println(i + " " + j);
                    }
                }
            }
        }
        return "" + ans;
    }

    private Map<Integer, Set<Integer>> recycle = new HashMap<Integer, Set<Integer>>();

    private void prepare() {
        int mul = 1;
        int dig = 1;
        for (int x = 10; x <= 2000000; x++) {
            if (mul * 10 == x) {
                mul *= 10;
                dig++;
            }
            Set<Integer> recs = new HashSet<Integer>();
            int t = x;
            for (int i = 1; i < dig; i++) {
                int last = t % 10;
                t /= 10;
                t += last * mul;
                if (t > x) {
                    recs.add(t);
                }
            }
            if (!recs.isEmpty()) {
                recycle.put(x, recs);
            }
        }
    }

    private BufferedReader reader;

    private StringTokenizer tt = new StringTokenizer("");

    private String nextToken() throws IOException {
        while (!tt.hasMoreTokens()) {
            tt = new StringTokenizer(reader.readLine());
        }
        return tt.nextToken();
    }

    private int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }

    private void run() throws IOException {
        String problem = "C-small-attempt0";
        reader = new BufferedReader(new FileReader(problem + ".in"));
        PrintWriter writer = new PrintWriter(new File(problem + ".out"));
        try {
            prepare();
            int cases = nextInt();
            int tc = 1;
            while (tc <= cases) {
                writer.print("Case #" + tc + ": ");
                writer.println(solve());
                tc++;
            }
        } finally {
            reader.close();
            writer.close();
        }
    }

    public static void main(String[] args) {
        try {
            new C().run();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}