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 */
package gcj;

import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author daniele
 */
public class GCJ_C {
    
    public static void main(String[] args) throws Exception{
        
        
        
        Scanner in = new Scanner(new File(args[0]));
        FileWriter out = new FileWriter("/home/daniele/Scrivania/Output");
        

        int prove=in.nextInt();
        int min,max;
        int cifre;
        int cifreaus;
        String temp;
        int aus;
        int count=0;
        ArrayList<Integer> vals = new ArrayList<Integer>();
        int jcount=0;
        ArrayList<Integer> perm = new ArrayList<Integer>();
        
        out.write("");
        out.flush();
        
        for(int i=1;i<=prove;i++){
            
            out.append("Case #" +i+": ");out.flush();
            
            min=in.nextInt();
            max=in.nextInt();
            
            for(int j=min;j<=max;j++){
               if(!vals.contains(j)){
                    temp=""+j;
                    cifre=temp.length();
                    aus=j;
                    perm.add(j);
                    for(int k=1;k<cifre;k++){
                        aus=rotateOnce(aus);
                        temp=""+aus;
                        cifreaus=temp.length();//elusione zeri iniziali
                        if(aus>=min && aus<=max && aus!=j && cifreaus==cifre && nobody(vals,perm)){ 
                            perm.add(aus);
                            jcount ++;
                            
                        }
                        
                    }
                    while(jcount>0){count+=jcount; jcount--;}
                    vals.addAll(perm);
                    perm= new ArrayList<Integer>();
                    
                }
            }
            out.append(count+"\n");out.flush();
            count=0;
            vals= new ArrayList<Integer>();
        }
        
        
        
    }
        static public int rotateOnce(int n){
            String s=""+n;
            if(s.length()>1){
                s=s.charAt(s.length()-1) + s.substring(0,s.length()-1);
                n=Integer.parseInt(s);
            }
            return n;
        }    
        
        static public boolean nobody(ArrayList<Integer> v,ArrayList<Integer> a){;
            for(int i=0;i<a.size();i++)
                if(v.contains(a.get(i))) return false;
            return true;
        } 
    
}


import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;


public class Recycling {
	Map<String, Boolean> map = null;
	
	public static void main(String[] args) {
		String inFile = args[0];
		//String inFile = "resources/C-small-attempt1.in";
		
		try {
			new Recycling().whatever(inFile, inFile+".out");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private void whatever(String inFile, String outFile) throws NumberFormatException, IOException {
		StringBuffer out = new StringBuffer();
		BufferedReader br = new BufferedReader(new FileReader(new File(inFile)));
	    String line;
	    int currentLineNumber = 0;
	    int totalTestCases = 0;
	    
	    while((line = br.readLine()) != null) {
	    	if(currentLineNumber == 0){
	    		totalTestCases = Integer.valueOf(line);
	    		currentLineNumber++;
	    		continue;
	    	}
	    	
	    	String[] tokenizedLine = line.split(" ");
	    	int a = Integer.valueOf(tokenizedLine[0]);
	    	int b = Integer.valueOf(tokenizedLine[1]);
		
	    	int count = countRecyclings(a, b);
	    	out.append("Case #"+currentLineNumber+": "+count+System.getProperty("line.separator"));
	    	currentLineNumber++;
	    }
	    
	    writeTextToFile(out.toString(), outFile);
	}
	
	
	private int countRecyclings(int a, int b){
		map = new HashMap<String, Boolean>();
		int recyclingCount = 0;
		for(int n = a; n<= b; n++){
			for(int j = 1; j<(""+n).length(); j++){
				String r = (""+n).substring((""+n).length()-j);
				if(!r.startsWith("0")){
					String m = r+(""+n).substring(0, (""+n).length()-j);
					if(a <= n && n < Integer.valueOf(m) && Integer.valueOf(m) <= b){
						if(!map.containsKey(n+m)){
							map.put(n+m, true);
							recyclingCount++;
						}
					}
				}
			}
		}
		return recyclingCount;
	}
	
	private void writeTextToFile(String text, String outputFileName) throws IOException{
		 BufferedWriter out = new BufferedWriter(new FileWriter(outputFileName));
		 out.write(text);
		 out.close();
	}
}
