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.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Writer;
import java.util.Arrays;

/**
 * Recycled Numbers
 * @author shibink
 *
 */
public class Recycle {

    public static int getCount(String str) {
        int count = 0;
        long tmp = 0;
        int numDigits = 0;

        if ((str == null) || (str.isEmpty())) {
            return count;
        }

        String[] strArray = str.split(" ");
        
        // It should be 2
        if (strArray.length != 2) {
            return 0;
        }
        long num1 = Long.parseLong(strArray[0]);
        long num2 = Long.parseLong(strArray[1]);
        tmp = num1;

        // Find number of digits in num1 & num2
        while (tmp > 0) {
            numDigits++;
            tmp = tmp / 10;
        }
        
        long arr[] = new long[numDigits];
        int cnt;
        for (long i = num1; i <= num2; i++) {
            Arrays.fill(arr, 0);
            cnt = 0;
            for (long val = i, j = 1; j < numDigits; j++) {
                tmp = val % 10;

                if (tmp == 0) {
                    val = val/10;
                    continue;
                }
                val = (int) (tmp * Math.pow(10, (numDigits - 1)) + (val / 10));
                for (int k=0; k<cnt; k++) {
                    if (val == arr[cnt]) {
                        continue;
                    }
                }
                arr[cnt++] = tmp;
                if ((val > i) && (val <= num2)) {
                    count++;
                }
            }
        }
        return count;
    }

    public static void processFile(String fileName) throws IOException {
        FileInputStream fstream = new FileInputStream(fileName);
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));

        // use buffering
        Writer output = new BufferedWriter(new FileWriter("output.txt"));

        try {
            String strLine = null;
            int numRecycle = 0;
            int count = 0;

            if ((strLine = br.readLine()) != null) {
                count = Integer.parseInt(strLine);
            }
            // Read File Line By Line
            for (int i = 1; i <= count; i++) {
                if ((strLine = br.readLine()) == null) {
                    return;
                }

                numRecycle = getCount(strLine);
                System.out.println("Case #" + i + ": " + numRecycle);

                StringBuffer outBuff = new StringBuffer("Case #" + i + ": " + numRecycle + "\n");
                output.write(outBuff.toString());
            }

        } finally {
            // Close the input stream
            in.close();
            output.close();
        }
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        String fileName = "input.in";
        try {
            processFile(fileName);
        } catch (IOException e) {
            // TODO Log error
        }
        return;
    }
}
