import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
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.HashSet;
import java.util.Set;

public class QualificationC {
	public static void main(String[] args) {
		File file = new File("D:/CodeJam/C-small-attempt0.in");
        StringBuffer contents = new StringBuffer();
        BufferedReader reader = null;

        try {
            reader = new BufferedReader(new FileReader(file));
            String text = null;

            int row = 0;
            while ((text = reader.readLine()) != null) {
                if(row == 0)
                	System.out.println(text);
                else{
                	String[] textArr = text.split(" ");
                	int a = Integer.parseInt(textArr[0]);
                	int b = Integer.parseInt(textArr[1]);
                	int half = (a+b)/2;
                	Set<Set<String>> resSet2 = new HashSet<Set<String>>();
                	int res = 0;
                	for(int i=a; i<=b; i++){
                		if(i<10)
                			continue;
                		String numStr = i+"";
                		for(int j=1; j<numStr.length(); j++){
                        	Set<String> resSet1 = new HashSet<String>();
                    		String moved = numStr.substring(j)+numStr.substring(0, j);
                    		if(moved.charAt(0) == '0')
                    			continue;
                    		if(moved.equals(numStr))
                    			continue;
                    		if(Integer.parseInt(moved) < a || Integer.parseInt(moved) > b)
                    			continue;
                    		
                    		resSet1.add(numStr);
                    		resSet1.add(moved);
                    		if(resSet2.contains(resSet1))
                    			continue;
                    		else
                    			resSet2.add(resSet1);
                    		
                    		//res += moved+" ";
                    		res++;
                		}
                	}
                	
                	contents.append("Case #"+row+": "+res).
                		append(System.getProperty("line.separator"));
                }
                row++;
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (reader != null) {
                    reader.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        
        System.out.println(contents.toString());
        
        try{
        	FileWriter fstream = new FileWriter("D:/CodeJam/C-small-attempt0.out");
        	BufferedWriter out = new BufferedWriter(fstream);
        	out.write(contents.toString());
        	out.close();
        }catch (Exception e){
        	System.err.println("Error: " + e.getMessage());
        }
	}

}
