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.util.Scanner;

public class CodeC{
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int tcase;
		int a, b;
		int numDigit;
		int num;
		
		tcase=sc.nextInt();
		for(int q=1;q<=tcase;q++){
			a=sc.nextInt();
			b=sc.nextInt();
			num=0;
			for(int i=a;i<=b;i++){
				numDigit=(i+"").length();
				int j=i+1;
				int limit=10*j;
				if(limit>b){
					limit=b;
				}
				//System.out.println("DIGIT "+numDigit+" LIMIT "+j+" - "+limit);
				for(;j<=limit;j++){
					String bil=i+"";
					for(int k=0;k<numDigit-1;k++){
						char kanan=bil.charAt(bil.length()-1);
						//System.out.println("AWAL "+bil+"\nKANAN "+kanan);
						bil=kanan+bil.substring(0,bil.length()-1);
						//System.out.println("UBAH "+bil);
						//System.out.println("A "+i+" B "+j+" "+bil.equals(j+""));
						if(bil.equals(j+"")){
							//System.out.println("A "+i+" B "+j);
							num++;
							break;
						}
					}
				}
			}
			System.out.println("Case #"+q+": "+num);
		}
	}
}