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.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class ProblemC{
	
	/**
	 * @param args
	 * @throws IOException 
	 * @throws NumberFormatException 
	 */
	public static void main(String[] args) throws NumberFormatException, IOException {
		BufferedReader br = new BufferedReader(new FileReader("C-large.in"));
		int count = Integer.parseInt(br.readLine());
		for (int i = 0; i<count; i++){
			String text = br.readLine();
			int result = calculate(text);
			System.out.println("Case #"+(i+1)+": "+result);
		}
		

	}

	private static int calculate(String text) {
		// TODO Auto-generated method stub
		int result = 0;
		String[] values = text.split(" ");
		long a = Long.parseLong(values[0]);
		long b = Long.parseLong(values[1]);
		for(long i = a; i < b; i++)
		{
			String nText = (new Long(i)).toString();
			List<Long> list = new ArrayList<Long>();
			for (int j = 1; j<nText.length();j++)
			{	
				String mText=nText.substring(j)+nText.substring(0,j);
				long m = Long.parseLong(mText);
				if(m>i && m<=b && !list.contains(m)){
					list.add(m);
					result++;
				}
			}
		}
		return result;
	}	
}