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.lang.reflect.Array;
import java.util.*;

public class ArrayUtil {
    static<T> T[] revers (T[] t){
        List<T> list = Arrays.asList(t);
        Collections.reverse(list);
        return (T[]) list.toArray();
    }

    static<T> Map<T,Integer> listToMap(List<T> list) {
        HashMap<T, Integer> map = new HashMap<>();
        for (int i = 0; i < list.size(); i++) {
            T t = list.get(i);
            map.put(t,i);
        }
        return map;
    }

    static <T> List<T> fromIndexList(List<Integer> inds, List<T> values) {
        ArrayList<T> ts = new ArrayList<>();
        for (Integer ind : inds) {
            ts.add(values.get(ind)) ;
        }
        return ts;
    }
}
