import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author ZAMAN
 */
import java.io.*;

public class test2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
       
        int start;
        int end;
        try {
            BufferedReader a = new BufferedReader(new FileReader("C-large.in"));
            BufferedWriter b = new BufferedWriter(new FileWriter("C-large.out"));
            
            int lines = Integer.valueOf(a.readLine());
            for (int z = 1; z <= lines; z++) {
                 int pairs = 0;
                String ints[] = a.readLine().split(" ");
                start = Integer.parseInt(ints[0]);
                end = Integer.parseInt(ints[1]);
                b.append("Case #" + z + ": ");
                for (int i = start; i <= end; i++) {
                    String number = String.valueOf(i);
                    int length = number.length();
                    int newnums[] = new int[length - 1];
                    int count = 0;
                    if (length == 1) {
                        continue;
                    }
                    if (length == 2) {

                        char ch1 = number.charAt(0);
                        char ch2 = number.charAt(1);
                        if (ch1 < ch2) {
                            String num = "";
                            //interchange
                            num += ch2 + "" + ch1;
                            int newnum = Integer.parseInt(num);

                            if (newnum <= end) {
                                pairs++;
                            }
                        }
                    }
                    if (length > 2) {
                        
                        //mving one character to the front
                        String num = "";
                        char ch = number.charAt(length - 1);
                        num += ch;
                        num += number.substring(0, length - 1);
                        int newnum = Integer.parseInt(num);
                        if (newnum > i && newnum <= end) {
                            if (count == 0) {
                                newnums[count] = newnum;
                                count++;
                                pairs++;
                            } else {
                                int k = 0;
                                for (; k < length - 1; k++) {
                                    if (newnums[k] == newnum) {
                                        break;
                                    }
                                }
                                if (k == length - 1) {
                                    pairs++;
                                }
                            }

                        }

                        for (int j = length - 2; j > 0; j--) {
                            //moving more than once
                            String mov = number.substring(j, length);
                            num = "";
                            num += mov;
                            num += number.substring(0, j);
                            newnum = Integer.parseInt(num);

                            if (newnum > i && newnum <= end) {
                                if (count == 0) {
                                    newnums[count] = newnum;
                                    count++;
                                    pairs++;
                                } else {
                                    int k = 0;
                                    for (; k < length - 1; k++) {
                                        if (newnums[k] == newnum) {
                                            break;
                                        }
                                    }
                                    if (k == length - 1) {
                                        pairs++;
                                    }
                                }
                            }


                        }
                    }


                }
                
                b.append("" + pairs);
                b.newLine();
            }

            b.flush();
            a.close();
            b.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
