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

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}

import java.io.File;
import java.io.FileNotFoundException;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

/**
 * 
 */

/**
 * @author alfonzzz
 * 
 */
public class RecycledNumbersSolver {

    /**
     * @param args
     */
    public static void main(String[] args) {
	Scanner in = new Scanner(System.in);
	// Scanner in = getInputScanner();
	int T = in.nextInt();
	for (int i = 1; i <= T; i++) {
	    in.nextLine();
	    int min = in.nextInt();
	    int max = in.nextInt();
	    int result = solve(min, max);
	    System.out.format("Case #%d: %d\n", i, result);
	}
    }

    private static int solve(int min, int max) {
	int result = 0;
	for (int i = min; i <= max; i++) {
	    result += ArrayInt.INSTANCE.setNum(i, min, max);
	}
	result /= 2;
	return result;
    }

    public static enum ArrayInt {

	INSTANCE;

	private char[] backingArray;
	private int orginalNumber;
	private int min;
	private int max;

	private int currentValue;

	private Set<Integer> recycledSet = new HashSet<Integer>();

	public int setNum(int num, int min, int max) {
	    this.orginalNumber = num;
	    this.min = min;
	    this.max = max;
	    backingArray = Integer.toString(num).toCharArray();
	    calculateValue();
	    recycledSet.clear();
	    shiftLeft();
	    int length = length();
	    for (int i = 1; i < length; i++) {
		if (isValid()) {
		    recycledSet.add(value());
		}
		shiftLeft();
	    }

	    return numRecycled();
	}

	private int calculateValue() {
	    currentValue = Integer.parseInt(new String(backingArray));
	    return currentValue;
	}

	public int value() {
	    return currentValue;
	}

	public int length() {
	    return backingArray.length;
	}

	public int numRecycled() {
	    return recycledSet.size();
	}

	public void shiftLeft() {
	    char first = backingArray[0];
	    for (int i = 1; i < backingArray.length; i++) {
		int newPosition = i - 1;
		backingArray[newPosition] = backingArray[i];
	    }
	    backingArray[backingArray.length - 1] = first;
	    calculateValue();
	}

	public boolean isValid() {
	    return !isLeadingZero() && isUnique() && isInRange();
	}

	public boolean isLeadingZero() {
	    return backingArray[0] == '0';
	}

	public boolean isUnique() {
	    if (value() == orginalNumber) {
		return false;
	    }

	    char first = backingArray[0];
	    for (char c : backingArray) {
		if (c != first) {
		    return true;
		}
	    }

	    return false;
	}

	public boolean isInRange() {
	    int value = value();
	    return value >= min && value <= max;
	}

    }

    private static Scanner getInputScanner() {
	Scanner in = null;
	try {
	    in = new Scanner(new File("in.txt"));
	} catch (FileNotFoundException e) {
	    e.printStackTrace();
	}
	return in;
    }

}
