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.util.LinkedList;
import java.util.List;


public class Secundaria 
{
	public Secundaria()
	{
		
	}
	
	public int nVeces(int primero, int ultimo)
	{
		int i = 0;
		
		if(primero <= 9 && ultimo <=9)
			return 0;
		
		LinkedList<Integer> lista;
		for(int j = primero; j <= ultimo; j++)
		{
			lista = deparse(j);
			for(int k = j+1; k <= ultimo; k++)
			{
				for(int r = 0; r < lista.size(); r++)
				{
					int prueba = monta(lista);
					if(k == prueba)
						i++;
					int x = lista.pop();
					lista.addLast(x);
				}
			}
		}
				
		return i;
	}
	
	public int monta(LinkedList<Integer> l)
	{
		int res = 0;
		int a = 1;
		for(int i = 0; i < l.size(); i++)
		{
			for(int k = i;k < l.size(); k++)
				a *= 10;
			
			res += l.get(i) * a;
			a = 1;
		}
		res = res / 10;
		return res;
	}
	
	public LinkedList<Integer> deparse(int k)
	{
		LinkedList<Integer> ret = new LinkedList<Integer>();
		
		int r = k;
		while(r != 0)
		{
			ret.addFirst(r % 10);			
			r = r / 10;
		}
				
		return ret;
	}
}
