import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;


public class Main {
	public static void main(String[] args) throws IOException {
		FileInputStream fis = new FileInputStream(new File("in.txt"));
		FileOutputStream fos = new FileOutputStream(new File("out.txt"));
		Scanner sc = new Scanner(fis);
		PrintWriter out = new PrintWriter(fos);
		int cases = sc.nextInt();
		for(int cs = 1; cs <= cases; cs++)
		{
			int begin = sc.nextInt();
			int end = sc.nextInt();
			int cnt = 0;
			for(int n=begin; n<=end; n++)
			{
				int weishu = getWeishu(n);
				int cur = getNext(n, weishu);
				while(cur != n)
				{
					if(cur > n && cur <=end && getWeishu(cur) == weishu)
						cnt++;
					cur = getNext(cur, weishu);
				}
			}
			out.println("Case #"+cs+": "+cnt);
		}
		sc.close();
		out.close();
	}
	public static int getNext(int n, int weishu)
	{
		//int weishu= getWeishu(n);
		return n%10*getTens(weishu-1)+n/10;
	}
	private static int getTens(int n) {
		int res = 1;
		for(int i=0; i<n; i++)
			res *= 10;
		return res;
	}
	private static int getWeishu(int n) {
		int weishu = 1;
		int nweishu = 10;
		while(n >= nweishu)
		{
			nweishu*=10;
			weishu++;
		}
		return weishu;
	}
}
