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();
    }
}

package QualificationC;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Arrays;
import java.util.HashSet;

public class ProblemC {
	
	public static void main(String args[]) throws Exception{
//		System.out.println(args[0]);
		FileReader fr = new FileReader(args[0]);
		BufferedReader br = new BufferedReader(fr);	
		
		int T = Integer.parseInt(br.readLine());
		
//		System.out.println(T);
		
		for(int t=0;t<T;t++) {
			String[] input = br.readLine().split(" ");
			int result = 0;
			
			int A = Integer.parseInt(input[0]);
			int B = Integer.parseInt(input[1]);
			int size = B - A;
			
			for(int i = 0; i<= size; i++) {
				String string = String.valueOf(i + A);
				int val = Integer.parseInt(string);
				
				String foo[] = permute(string);
				if(foo == null) continue;
				
				for(int j=0;j<foo.length;j++) {
					int swapval = Integer.parseInt(foo[j]);
					
					if(swapval < A || swapval > B) continue;
					if(swapval <= val) continue;
					
					result++;
					
//					System.out.println(swapval);
				}
			}
			
			System.out.println("Case #" + (t+1) + ": " + result);
			
		}
	}
	
	
	public static String shiftString(String a) {
		return a.substring(1) + a.charAt(0);
	}
	
	public static String[] permute(String a) {
		int len = a.length();
		
		if(len <= 1) return null;
		
		
		String[] result = new String[len - 1];
		result[0] = shiftString(a);
		for(int i=1;i<len - 1;i++) {
			result[i] = shiftString(result[i-1]);
		}
		
		HashSet<String> set = new HashSet<String>(Arrays.asList(result));
		result = set.toArray(new String[0]);
		
//		String[] answer = set.toArray(new String[0]);	
//		if(set.size() != result.length) {
//			System.out.println("--b4--");
//			System.out.println(Arrays.toString(result));
//			
//			System.out.println("--after--");
//			System.out.println(Arrays.toString(answer));
//			System.out.println("-----");
//		}
		
//		System.out.println(Arrays.toString(result));
		return result;
	}
	
}
