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.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class C {

	public static void main(String[] args) throws Exception{
		new C().solve(args[0]);
	}

	private void solve(String file) throws Exception {
		Scanner s = new Scanner(new File(file));
		int x=s.nextInt();
		for(int i=1;i<=x;i++) {
			int y = calculate(s.nextInt(),s.nextInt());			
			System.out.format("Case #%d: %d\n",i,y);
		}
			
	}

	private int calculate(int a, int b) throws Exception {
		int r = 0;
		for ( int w=a; w<=b ; w++) {
			String A = Integer.toString(w);
			int l = A.length();
			List<Integer> list=new ArrayList<Integer>();
			for(int i=0;i<l;i++) {
				A=A.substring(1)+A.charAt(0);
				int bb = Integer.parseInt(A);
				if ( bb==w ) continue;
				if ( bb<=w ) continue;
				if ( bb>b  ) continue;
				if ( list.contains(bb))continue;
				list.add(bb);
				r++;
			}
		}
		return r;
	}
}
