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;
	}
}
//saurabh

import java.io.*;
import java.util.*;

public class Recycle
{
	public static void main(String args[]) throws IOException
	{
		Recycle ob=new Recycle();
		int T,A,B;
		Scanner c= new Scanner(new File("Recycle.txt"));
		T=c.nextInt();
		int ans[]=new int[T];
		for(int i=0;i<T;i++)
		{	
			A=c.nextInt();
			B=c.nextInt();
			int nPairs=0;
			for(int j=A;j<B;j++)
			{
				nPairs+=ob.get_pairs2(j,B);
			}
			ans[i]=nPairs;
		}
				
		for(int i=0;i<T;i++)
			System.out.println("Case #"+(i+1)+": "+ans[i]);
	}
	
	int get_pairs2(int x, int B)
	{
		int base=x;
		String s=Integer.toString(B);
		int n=s.length();
		double mul=Math.pow(10,(n-1));
		LinkedList<Integer> L=new LinkedList<Integer>();
		for(int i=0;i<n;i++)
		{
			int y=x%10;
			x/=10;
			x+=y*mul;
			if(x>base && x<=B)
				if(!L.contains(x)) {
					L.add(x);
				}
		}
		return L.size();
	}
}
