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.util.*;
public class c 
{
	public static void main(String[] args)
	{
		Scanner input = new Scanner(System.in);
		int T = input.nextInt();
		for(int t = 1; t<=T; t++)
		{
			System.out.print("Case #" + t + ": ");
			int a = input.nextInt();
			int b = input.nextInt();
			int count = 0;
			for(int i = a; i<=b; i++)
			{
				if(i >= 1000000)
				{
					int next = 1000000*(i%10)+i/10;
					if(next > i && next <= b)
						count++;
					int next2 = 100000*(i%100) + i/100;
					if(next2 > i && next2 <= b && next != next2)
						count++;
					int next3 = 10000*(i%1000)+i/1000;
					if(next3 > i && next3 <= b && next != next3 && next2 != next3)
						count++;
					int next4 = 1000*(i%10000) + i/10000;
					if(next4 > i && next4 <= b && next != next4 && next2 != next4 && next3 != next4)
						count++;
					int next5 = 100*(i%100000) + i/100000;
					if(next5 > i && next5 <= b && next != next5 && next2 != next5 && next3 != next5 && next4 != next5)
						count++;
					int next6 = 10*(i%1000000)+i/1000000;
					if(next6 > i && next6 <= b && next != next6 && next2 != next6 && next3 != next6 && next4 != next6 && next5 != next6)
						count++;
				}
				else if(i >= 100000)
				{
					int next = 100000*(i%10) + i/10;
					if(next > i && next <= b)
						count++;
					int next2 = 10000*(i%100)+i/100;
					if(next2 > i && next2 <= b && next != next2)
						count++;
					int next3 = 1000*(i%1000) + i/1000;
					if(next3 > i && next3 <= b && next != next3 && next2 != next3)
						count++;
					int next4 = 100*(i%10000) + i/10000;
					if(next4 > i && next4 <= b && next != next4 && next2 != next4 && next3 != next4)
						count++;
					int next5 = 10*(i%100000)+i/100000;
					if(next5 > i && next5 <= b && next != next5 && next2 != next5 && next3 != next5 && next4 != next5)
						count++;
				}
				else if(i >= 10000)
				{
					int next = 10000*(i%10)+i/10;
					if(next > i && next <= b)
						count++;
					int next2 = 1000*(i%100) + i/100;
					if(next2 > i && next2 <= b && next2 != next)
						count++;
					int next3 = 100*(i%1000) + i/1000;
					if(next3 > i && next3 <= b && next3 != next && next3 != next2)
						count++;
					int next4 = 10*(i%10000)+i/10000;
					if(next4 > i && next4 <= b && next4 != next3 && next4 != next2 && next4 != next)
						count++;
				}
				else if(i >= 1000)
				{
					int next = 1000*(i%10) + i/10;
					if(next > i && next <= b)
					{
						count++;
					}
					int next2 = 100*(i%100) + i/100;
					if(next2 > i && next2 <= b && next != next2)
					{
						count++;
					}
					int next3 = 10*(i%1000)+i/1000;
					if(next3 > i && next3 <= b && next != next3 && next2 != next3)
					{
						count++;
					}
				}
				else if(i >= 100)
				{
					int next = 100*(i%10) + i/10;
					if(next > i && next <= b)
						count++;
					int next2 = 10*(i%100) + i/100;
					if(next2 > i && next2 <= b && next2 != next)
						count++;
				}
				else if(i >= 10)
				{
					int next = 10*(i%10) + i/10;
					if(next > i && next <=b)
						count++;
				}
			}
			System.out.println(count);
		}
	}
}
