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.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashSet;

public class qualC {
	public static void main(String[] args) {
		String prblm="C"; boolean fl=!true;
		String filein=prblm+"-"+((fl)?"large":"small")+".in.txt";
		String fileout=prblm+"-"+((fl)?"large":"small")+".out.txt";
		try {
			BufferedReader fr= new BufferedReader(new FileReader(filein));
			BufferedWriter fw= new BufferedWriter(new FileWriter(fileout));
			String s=fr.readLine();
			int n=Integer.parseInt(s);
			HashSet<Integer> hs=new HashSet<Integer>();
			for (int i = 1; i <= n; i++) {
				s=fr.readLine();
				String[] tok=s.split(" ");
				int A=Integer.parseInt(tok[0]);
				int B=Integer.parseInt(tok[1]);
				int nd=1;
				int msk=1;
				for (int t=A/10; t > 0; t/=10) { nd++; msk*=10; }
				int nrn=0;
				for (int j = A; j <= B; j++) {
					hs.clear();
					int d=10;
					int res=msk;
					while (res>0) {
						int nj=(j%d)*res+j/d;
						if (nj>j && nj<=B && !hs.contains(nj)) {
							nrn++;
							hs.add(nj);
						}
						d*=10;
						res/=10;
					}					
				}
				System.out.println(nrn);
				fw.write("Case #"+i+": "+ nrn +"\n");
			}
			fr.close();
			fw.close();
		} catch (Exception e) {			
			e.printStackTrace();
		}		
	}
}
