import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

package gcj;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;

public abstract class SolverBase {

    public static final String TOKEN_SEPARATOR = " ";

    public static final String IMPOSSIBLE = "IMPOSSIBLE";

    public String problemName;

    public boolean verbose = false;

    public SolverBase(String problemName) {
        this.problemName = problemName;
    }

    public void solve(InputStream in, PrintStream out) throws Exception {
        InputStreamReader isr = new InputStreamReader(in);
        BufferedReader reader = new BufferedReader(isr);
        long N = Long.parseLong(reader.readLine());
        for (long i = 1; i <= N; i++) {
            out.print("Case #" + i + ": ");
            solveSingle(reader, out);
        }
    }

    public abstract void solveSingle(BufferedReader reader, PrintStream out) throws Exception;

    public long[] readSingleLineLongArray(BufferedReader reader) throws Exception {
        String[] longsAsStrings = readSingleLineStringArray(reader);
        long[] longs = new long[longsAsStrings.length];
        for (int i = 0; i < longsAsStrings.length; i++) {
            longs[i] = Long.parseLong(longsAsStrings[i]);
        }
        return longs;
    }

    public int[] readSingleLineIntArray(BufferedReader reader) throws Exception {
        String[] intsAsStrings = readSingleLineStringArray(reader);
        int[] ints = new int[intsAsStrings.length];
        for (int i = 0; i < intsAsStrings.length; i++) {
            ints[i] = Integer.parseInt(intsAsStrings[i]);
        }
        return ints;
    }

    public String[] readSingleLineStringArray(BufferedReader reader) throws Exception {
        String line = reader.readLine();
        if (verbose) {
            System.out.println("Reading line " + line);
        }
        return line.split(TOKEN_SEPARATOR);
        // return StringUtils.split(line, TOKEN_SEPARATOR);
    }

    public String[][] readStringArrays(BufferedReader reader, int lines) throws Exception {
        String[][] arrays = new String[lines][];
        for (int i = 0; i < lines; i++) {
            arrays[i] = readSingleLineStringArray(reader);
        }
        return arrays;
    }

    public char[][] readCharArrays(BufferedReader reader, int lines) throws Exception {
        char[][] arrays = new char[lines][];
        for (int i = 0; i < lines; i++) {
            String line = reader.readLine();
            arrays[i] = line.toCharArray();
        }
        return arrays;
    }

    public long[][] readLongArrays(BufferedReader reader, int lines) throws Exception {
        long[][] arrays = new long[lines][];
        for (int i = 0; i < lines; i++) {
            arrays[i] = readSingleLineLongArray(reader);
        }
        return arrays;
    }

    protected void check(boolean b) {
        if (!b) {
            throw new IllegalStateException("Check failed");
        }
    }
}
