import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

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


public class Recycled {

	
	public static boolean isRecycled(int a, int b) {
		String left = a+"";
		String right = b+"";
		if(left.length()!=right.length()) return false;
		int l = left.length();
		for(int i=0;i<l;i++) {
			boolean o = true;
			for(int j=0;j<l;j++) {
				if(left.charAt((i+j)%l) == right.charAt(j)) continue;
				else o=false;
			}
			if(o) return true;
		}
		return false;
	}
	
	public static int next(int in) {
		int p = (int) (Math.log(in)/Math.log(10));
		int last = in - Math.abs(in/10)*10;
		if(last==0) return 0;
		return (int) (last*Math.pow(10, p) + in/10);
	}
	
	public static void main(String[] args) throws NumberFormatException, IOException {
//		System.out.println(isRecycled(12345, 234521));
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		
		int cases = Integer.parseInt(in.readLine());
		for (int i = 1; i <= cases; i++) {
			String[]e = in.readLine().trim().split(" ");
			int A = Integer.parseInt(e[0]);
			int B = Integer.parseInt(e[1]);
			
			int count = 0;
			
			for(int x=A;x<B;x++) for(int y=x+1;y<=B;y++) if(isRecycled(x, y)) count ++;
			
			System.out.println("Case #"+i+": "+count);
		}
	}
	
}
