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();
    }
}

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;


public class Main {

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        if(args.length != 1) {
            return;
        }
        FileInputStream inputStream = new FileInputStream(args[0]);
        InputStreamReader istReader = new InputStreamReader(inputStream);
        BufferedReader buffReader = new BufferedReader(istReader);

        // T:åé¡æ°
        String tStr = buffReader.readLine();
        int t = Integer.valueOf(tStr);

        for(int i = 1; i <= t; i++) {
            StringBuilder caseBuilder = new StringBuilder("Case #");
            caseBuilder.append(i);
            caseBuilder.append(": ");

            // A and B:åé¡
            String abStr = buffReader.readLine();
            String[] aandbStrs = abStr.split(" ");
            int a = Integer.valueOf(aandbStrs[0]);
            int b = Integer.valueOf(aandbStrs[1]);

            int y = 0;
            for(int n = a; n < b; n++) {
                String nStr = String.valueOf(n);

                int[] ms = new int[nStr.length() - 1];
                for(int k = 1; k < nStr.length(); k++) {
                    String mStr = nStr.substring(nStr.length() - k).concat(nStr.substring(0, nStr.length() - k));

                    int m = Integer.valueOf(mStr);
                    if(m <= a || b < m || m <= n)
                        continue;

                    boolean already = false;
                    for(int j = 0; j < nStr.length() - 1; j++) {
                        if(m == ms[j]) {
                            already = true;
                            break;
                        }
                    }
                    if(!already) {
                        y++;
                        ms[k - 1] = m;
                    }
                }
            }

            caseBuilder.append(y);

            System.out.print(caseBuilder.toString());
            if(i != t)
                System.out.println();
        }
    }

}
