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;
import java.util.Hashtable;



public class Recycled_Numbers {
	public static void main(String[] args) throws IOException {
BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
String x=reader.readLine();
long cases=Long.parseLong(x);
Hashtable <Long,Long>hash=new Hashtable<Long, Long>();
String input="";
long a=0;
String result="";
long b=0;
long i=a;
String temp="";
String ctemp="";
long counter=0;
String []array;
for(int j=0;j<cases;j++){
	input=reader.readLine();
	array=input.split(" ");
	a=Long.parseLong(array[0]);
	b=Long.parseLong(array[1]);
	i=a;
	 temp="";
	ctemp="";
	counter=0;
while(i<=b){
temp=i+"";
hash.clear();
for(int k=1;k<temp.length();k++){
ctemp=temp.substring(k,temp.length())+temp.substring(0,k);	
if((i<Long.parseLong(ctemp))&&(Long.parseLong(ctemp)<=b)){
	if(hash.get(Long.parseLong(ctemp))==null){
	hash.put(Long.parseLong(ctemp), Long.parseLong(ctemp));
	counter++;
	}
}
}
i++;
}
result+="Case #"+(j+1)+": "+counter+"\n";
}
System.out.println(result);
}
}