import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;


public class Recycling {

	public static void main(String[] args) {
		try{
			
			//Input
			FileInputStream fstream = new FileInputStream("input.in");
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			
			//Output
			FileWriter ostream = new FileWriter("output.out");
			BufferedWriter out = new BufferedWriter(ostream);

			String str;
			//Read header & get num cases
			str = br.readLine();
			int numCases = Integer.parseInt(str);
			
			//Read File Line By Line
			for(int i = 1;i<=numCases;i++){
			    str = br.readLine();
			    String[] splitStr = str.split(" ");
			    
			    int A = Integer.parseInt(splitStr[0]);		
			    int B = Integer.parseInt(splitStr[1]);
			    
			    int numPairs = 0;
			    
			    for(int n=A;n<B;n++){
			    	for(int m=n+1;m<=B;m++){
			    		numPairs+=compare(n,m);
			    	}
			    }

			    
				String op = "Case #"+i+": "+numPairs;
				System.out.println(op);
				out.write(op);
				
				if(i!=numCases){
					out.newLine();
				}
			}
			
			
			//Close the input stream
			in.close();
			out.close();
		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}
	
	public static int compare(int n,int m){
		String N = String.valueOf(n);
		String M = String.valueOf(m);
		
		//If length of String is 1, not a pair
		if(N.length() ==1 || M.length() == 1){
			return 0;
		}
		//If not same length, not a pair
		if(N.length() != M.length()){
			return 0;
		}
		
		//If they are the same, not a pair
		if(n==m){
			return 0;
		}
		
		for(int i=1;i<N.length();i++){
			//Match start region of N and end region of M
			Boolean one = N.regionMatches(0, M, M.length()-i, i);
			//Match end region of N and start region of M
			Boolean two = N.regionMatches(i, M, 0, M.length()-i);
			
			if(one && two){
				return 1;
			}
		}
		
		return 0;
	}
	
}

