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.*;

public class C {
	static int solve(int a, int b) {
		int result = 0;
		for(int i = a; i <= b; ++i) {
			result += suffle(a, b, i);
		}
		
		return result/2;
	}
	
	static int suffle(int a, int b, int c) {
		int base = 1;
		int clen = (c+"").length();
		Set<Integer> r = new HashSet<Integer>();
		while(base < b) {
			base *= 10;
			int d = c/base;
			int e = c%base;
			int f = Integer.valueOf(e+""+d);
			int flen = (f+"").length();
			if(f != c && f >= a && f <= b && clen == flen) {
				r.add(f);
			}
		}
		
		return r.size();
	}
	
	public static void main(String args[]) {
		Scanner input = new Scanner(System.in);
		int test = input.nextInt();
		
		for(int i = 1; i <= test; ++i) {
			int a = input.nextInt(), b = input.nextInt();
			System.out.println("Case #" + i + ": " + solve(a, b));
		}
	}
}
