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.lang.StringBuilder;
import java.util.Scanner;
import java.io.FileWriter;

public class RN {
	
	public static void main(String[] args) throws Exception{
		File input = new File("C-large.in");
		File output = new File("output.out");
		FileWriter fw = new FileWriter(output);
		Scanner s = new Scanner(input);
		
		int numloops = s.nextInt();
		StringBuilder sb = new StringBuilder();
		
		for(int n=0; n<numloops; n++){
			sb.append("Case #" + (n+1) + ": ");
			
			int low = s.nextInt();
			int hi = s.nextInt();
			int numrepeats = 0;
			
			for(int i=low; i<hi; i++){
				String strnum = "" + i;
				//System.out.println(strnum);
				
				for(int j=1; j<strnum.length(); j++){
					String rotstr = strnum.substring(j) + strnum.substring(0,j);
					//System.out.println(rotstr);
					int rotval = Integer.parseInt(rotstr);
					rotstr = "" + rotval;
					
					if(rotval > i && rotval <= hi ){//&& rotstr.length() == strnum.length()){
						numrepeats++;
						//System.out.println(strnum + " " + rotstr);
					}
					
					if(rotval == i)
						;//break; //already had a repeating number
				}
			}
			sb.append(numrepeats + "\n");
			//fw.append(numrepeats + "\n");
		}
		fw.write(sb.toString());
		fw.close();
	}
}
