import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

public class ProblemC {
	public static void main(String[] args) throws NumberFormatException, IOException{

		BufferedReader reader=new BufferedReader(new FileReader(new File(args[0])));

		int numTestCases=Integer.parseInt(reader.readLine());

		String[] split;

		for (int testCase=0; testCase<numTestCases; testCase++){
			split=reader.readLine().split("\\s+");
			
			int a=Integer.parseInt(split[0]);
			int b=Integer.parseInt(split[1]);
			
			String stra=String.valueOf(a);
			
			String curr;
			int currVal;
			
			int len=stra.length();
			
			Set<String> iCanHasPair=new HashSet<String>();
			
			int result=0;
			
			for (int i=a; i<=b; i++){
				curr=String.valueOf(i);
								
				boolean inRange;
								
				for (int k=1; k<len; k++){
					currVal=0;
					inRange=true;
					
					for (int j=0; j<len; j++){
						currVal+=((int)Math.pow(10, len-j-1))*(curr.charAt((j+k)%len)-'0');
						
						if (currVal>b){
							inRange=false;
							break;
						}
					}
					
					if (currVal<a)
						continue;
					
					if (!inRange)
						continue;
					
					
					if (i!=currVal){
						String key=i<currVal?i+":"+currVal:currVal+":"+i;
					
						if (!iCanHasPair.contains(key)){
							iCanHasPair.add(key);
							result++;
						}
					}

				}
				
			}
			
			
			System.out.println("Case #"+(testCase+1)+": "+result);
		}		
	}
}
