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.math.BigInteger;
import java.util.Locale;
import java.util.StringTokenizer;

/**
 * User: Igor Kirov
 * Date: 14.04.12
 */
public class C implements Runnable {

    private int recycle(int t, int multiplier) {
        int cc = t % 10;
        while (cc == 0) {
            t = t / 10;
            t = t + cc * multiplier;
            cc = t % 10;
        }
        t = t / 10;
        t = t + cc * multiplier;
        return t;
    }

    private void solve() throws IOException {
        int a = nextInt();
        int b = nextInt();

        int temp = a / 10;
        int multiplier = 1;
        while (temp > 0) {
            multiplier *= 10;
            temp = temp / 10;
        }

        int ans = 0;
        boolean used[] = new boolean[b + 10];
        for (int i = a; i <= b; i++) {
            int next = recycle(i, multiplier);
            while (next != i) {
                if (next >= a && next <= b) {
                    ans++;
                }
                next = recycle(next, multiplier);
            }
        }
        writer.println(ans / 2);
    }

    public static void main(String[] args) {
        new Thread(null, new C(), "", 64 * 1024 * 1024).start();
    }

    StringTokenizer tokenizer;
    BufferedReader reader;
    PrintWriter writer;

    public void run() {
        try {
            try {
                Locale.setDefault(Locale.US);
            } catch (Exception ignored) {
            }

            reader = new BufferedReader(new FileReader("C.in"));
            writer = new PrintWriter(new FileWriter("C.out"));
            tokenizer = null;

            int tests = nextInt();
            for (int i = 0; i < tests; i++) {
                writer.printf("Case #%d: ", i + 1);
                solve();
                writer.flush();
            }

            reader.close();
            writer.close();
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(1);
        }
    }

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

    private long nextLong() throws IOException {
        return Long.parseLong(nextToken());
    }

    private BigInteger nextBigInteger() throws IOException {
        return new BigInteger(nextToken());
    }

    private double nextDouble() throws IOException {
        return Double.parseDouble(nextToken());
    }

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