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.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Scanner;
import java.util.Stack;


public class Main {

	/**
	 * @param args
	 */
	static int recyclePair(int A, int B){
		int pairCount =0;
		HashSet<Integer> hs = new HashSet<Integer>();
		for(int x=A;x<B;x++){
			hs.clear();
			List<Integer> digits = getDigits(x);
			for(int i =1;i<digits.size();i++){
				int no = 0, k=i;
				for(int j= 0;j<digits.size();j++){
					no = no*10 + digits.get(k); k = (k+1)%digits.size();
				}
				if((x<no)&&(no<=B)&&(!hs.contains(no))){
					pairCount++;
					hs.add(no);
				}
			}
		}
		
		return pairCount;
	}
	
	
	
	
	static List<Integer> getDigits(int x){
		List<Integer> list = new ArrayList<Integer>();
		Stack<Integer> st = new Stack<Integer>();
		while(x>0){
			st.push(x - ((int)(x/10))*10);
			x /= 10;
		}
		
		
		while(!st.isEmpty()){
			list.add(st.pop());
		}
		return list;
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = null;
		BufferedWriter bw = null;
		try{
			sc = new Scanner(new File("input.txt"));
			bw = new BufferedWriter(new FileWriter("gcj3a.txt"));
			int T = sc.nextInt();
			int A, B, x;
			for(int i=0;i<T;i++){
				A = sc.nextInt();
				B = sc.nextInt();
				bw.write("Case #"+(i+1)+": "+recyclePair(A, B));bw.newLine();
			}
		}catch(Exception e){}
		finally{
			try{
				sc.close();bw.close();
			}catch(Exception e){}
		}
		/*
		recyclePair(12345, 12345);
		System.out.println();
		System.out.println(getDigits(120980));
		*/
	}

}
