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.*;
import java.util.Set;
import java.util.HashSet;

public class recycled {
	public static int A,B;
	public static int[] t = {1,10,100,1000,10000,100000,1000000};
	
	public static int solve(){
		if(B<10) return 0;
		int DB=0,kit,m,n;
		
		int lg = 0;
		while(lg < 6 && A >= t[lg+1]) lg++; 
		//System.out.println(A+" "+lg);
		
		for(n = A; n <B; n++){
			kit = 1;
			Set H = new HashSet();
			while(t[kit] < n){
				m = t[lg-kit+1]*(n%t[kit])+(n/t[kit]);
				//System.out.println("testing >>> "+n+" - "+m);	
				if( n < m && m <= B && (n%t[kit])*10>=t[kit] && !H.contains(m)) {
					
					DB++;
					H.add(m);
					//System.out.println("OK >>> "+n+" - "+m+" DB= "+DB);	
				}
				kit++;
			}
		}
		return DB;
	}
	
	public static void main (String args[]) throws IOException{
		
		
		BufferedReader be = new BufferedReader(new FileReader("C-small.in"));
		int T = Integer.parseInt(be.readLine());
		for(int i=1; i<=T; i++){
			String s = be.readLine();
			A = Integer.parseInt(s.split(" ")[0]);
			B = Integer.parseInt(s.split(" ")[1]);
			System.out.println("Case #"+i+": "+solve());
		}
		be.close();
	}
}

