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 util.CombinationGenerator;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class SetUtil {
    public static long getOne(int n) {
        return 1<<n;
    }

    public static List<Integer> getList(long set, int n) {
        ArrayList<Integer> integers = new ArrayList<>();
        for (int i=0;i<n; i++) {
            if ((set & getOne(i))!=0) {
                integers.add(i);
            }
        }
        return integers;
    }
    public static <T>long getForList(Map<T,Integer> positions, List<T> objs) {
        long res = 0L;
        for (T obj : objs) {
            int pos = positions.get(obj);
            res |= getOne(pos);
        }
        return res;
    }

    public static void cycleSubsets(int num, SubsetCallBack callBack) {
        callBack.run(0, 0);
        for (int i =  1; i<=num; i++) {
            CombinationGenerator generator = new CombinationGenerator(num,i);

            while (generator.hasMore()) {
                long n = 0;
                int[] next = generator.getNext();
                for (int i1 : next) {
                    n |= getOne(i1);
                }
                callBack.run(n,i);
            }
        }

    }

    public static interface SubsetCallBack {
        void run(long subset, int i);
    }
}
