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.*;
import java.math.*;
import java.util.*;

public class CodeJam {

    void runCase(int caseNum) throws IOException {
        int a = nextInt();
        int b = nextInt();
        Set<Long> res = new HashSet<Long>();

        for (long i = a; i <= b; ++i) {
            String s = Long.toString(i);
            for (int j = 1; j < s.length(); ++j) {
                char[] arr = new char[s.length()];
                for (int k = j; k < s.length(); ++k)
                    arr[k - j] = s.charAt(k);
                for (int k = 0; k < j; ++k)
                    arr[s.length() - j + k] = s.charAt(k);
                Long t = Long.parseLong(new String(arr));
                if (t > b || t <= i)
                    continue;
                if (!res.contains(i * 10000000 + t))
                    res.add(i * 10000000 + t);
            }
        }

        System.out.print(new StringBuilder().append("Case #").append(caseNum).append(": ").append(res.size()).toString());

        System.out.println();
    }


    public static void main(String[] args) throws IOException {
        System.setIn(new FileInputStream(new File(
                "input.txt")));
        PrintStream ps = new PrintStream(new File(
                "output.txt"));
        System.setOut(ps);
        new CodeJam().runit();
        ps.flush();
        ps.close();
        return;
    }

    BufferedReader in;
    private StringTokenizer st;
    PrintWriter out;

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

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

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

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



    void runit() throws IOException {
        in = new BufferedReader(new InputStreamReader(System.in));
        out = new PrintWriter(new OutputStreamWriter(System.out));
        st = new StringTokenizer("");

        int N = nextInt();
        for (int i = 0; i < N; i++) {
            runCase(i + 1);
        }

        out.flush();
    }

}
