import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

package com.renoux.gael.codejam.fwk;

import java.io.File;

import com.renoux.gael.codejam.utils.FluxUtils;
import com.renoux.gael.codejam.utils.Input;
import com.renoux.gael.codejam.utils.Output;
import com.renoux.gael.codejam.utils.Timer;

public abstract class Solver {

	public void run() {
		Timer.start();
		if (!disableSample())
			runOnce(getSampleInput(), getSampleOutput());
		System.out.println(Timer.check());

		Timer.start();
		if (!disableSmall())
			runOnce(getSmallInput(), getSmallOutput());
		System.out.println(Timer.check());

		Timer.start();
		if (!disableLarge())
			runOnce(getLargeInput(), getLargeOutput());
		System.out.println(Timer.check());

	}

	public void runOnce(String pathIn, String pathOut) {
		Input in = null;
		Output out = null;
		try {

			in = Input.open(getFile(pathIn));
			out = Output.open(getFile(pathOut));

			int countCases = Integer.parseInt(in.readLine());
			for (int k = 1; k <= countCases; k++) {
				out.write("Case #", k, ": ");
				solveCase(in, out);
			}
		} catch (RuntimeException e) {
			e.printStackTrace();
		} finally {
			FluxUtils.closeCloseables(in, out);
		}
	}

	private File getFile(String path) {
		return new File(path);
	}

	protected abstract void solveCase(Input in, Output out);

	private String getFullPath(boolean input, String type) {
		if (input)
			return "D:\\Downloads\\CodeJam\\" + getProblemName() + "\\"
					+ getProblemName() + "_input_" + type + ".txt";
		else
			return "D:\\Downloads\\CodeJam\\" + getProblemName() + "\\"
					+ getProblemName() + "_output_" + type + ".txt";
	}

	protected String getSampleInput() {
		return getFullPath(true, "sample");
	}

	protected String getSmallInput() {
		return getFullPath(true, "small");
	}

	protected String getLargeInput() {
		return getFullPath(true, "large");
	}

	protected String getSampleOutput() {
		return getFullPath(false, "sample");
	}

	protected String getSmallOutput() {
		return getFullPath(false, "small");
	}

	protected String getLargeOutput() {
		return getFullPath(false, "large");
	}

	protected boolean disableSample() {
		return disable()[0];
	}

	protected boolean disableSmall() {
		return disable()[1];
	}

	protected boolean disableLarge() {
		return disable()[2];
	}

	protected boolean[] disable() {
		return new boolean[] { false, false, false };
	}

	protected abstract String getProblemName();
}
