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();
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;

/**
 *
 * @author akila
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws FileNotFoundException, IOException {
        // TODO code application logic here
        ArrayList<String> testCases = new ArrayList<String>();
        boolean isCaseNo = true;
        int testCount = 0;
        FileReader fr = new FileReader("C-large.in");
        BufferedReader br = new BufferedReader(fr);
        String s;

        while ((s = br.readLine()) != null) {
            if (isCaseNo) {
                testCount = Integer.parseInt(s);
                isCaseNo = false;
            } else {
                testCases.add(s);
            }
        }
        fr.close();
        Solve(testCount, testCases);
    }

    public static void Solve(int testCount, ArrayList<String> testCases) throws IOException {


        FileWriter fstream = new FileWriter("out.txt");
        BufferedWriter out = new BufferedWriter(fstream);

        for (int i = 0; i < testCount; i++) {
            int A = 0, B = 0, count = 0;
            String s = testCases.get(i);
            String[] ar = s.split(" ");
            A = Integer.parseInt(ar[0]);
            B = Integer.parseInt(ar[1]);

            for(int j = A; j <= B; j++) {
                ArrayList<NumberPair> nums = new ArrayList<NumberPair>();
                String num = String.valueOf(j);
                for(int k =0; k < num.length(); k++) {
                    String num1 = num.substring(0, k);
                    String num2 = num.substring(k, num.length());

                    String newNum = num2 + num1;
                    int newI = Integer.parseInt(newNum);

                    NumberPair np = new NumberPair(j, newI);
                    if (newI >= A && newI <= B 
                            && newNum.equals(String.valueOf(newI))
                            && !num.equals(newNum)
                            && !nums.contains(np)) {
                        count++;
                        nums.add(np);
                    }                       
                }
            }

            out.write("Case #" + (i + 1) + ": " + count/2 + "\n");
        }
        out.close();
    }
}

class NumberPair {
   int m, n;

    public NumberPair(int m, int n) {
        this.m = m;
        this.n = n;
    }
  
    @Override
    public boolean equals(Object obj) {
        NumberPair np = (NumberPair)obj;
        return (np.m == this.m && np.n == this.n) || (np.m == this.n && np.n == this.m);
    }

    @Override
    public int hashCode() {
        int hash = 7;
        hash = 61 * hash + this.m;
        hash = 61 * hash + this.n;
        return hash;
    }

}
