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.*;
import java.io.*;
import java.lang.Integer;


public class C {	
	
    public static void main(String[] args) throws IOException {

        Scanner in = new Scanner(new File("C-small-attempt0.in"));
		Scanner in1 = new Scanner(new File("C-small-attempt0.in"));
		FileWriter fw = new FileWriter("C-small.out");	
		int T = in.nextInt();
		in.nextLine();
		in1.nextLine();
		for (int cases = 1; cases <= T; cases++){
			
			// read the string length for this case
			String line = in.nextLine();
			int len = (line.length() - 1)/2;
			int valueA = 0;
			int valueB = 0;
			int base = 1;
			int smallNum = in1.nextInt();
			int largeNum = in1.nextInt();			
			int[] number = new int[len];
			int total = 0;
			// get the base number
			for (int i = 1; i < len; i++){
				base = base * 10;							
			}
			fw.write("Case #" + cases + ": ");
			for(int i = smallNum; i <= largeNum; i++) {
				number[0] = i;
				// fw.write(number[0] + " ");
				for (int j = 1; j < len; j++) {
					boolean norepeat = false;
					number[j] = number[j - 1] / base + (number[j - 1] % base) * 10;
					// fw.write(number[j] + " ");
					if (number[j] >= smallNum && number[j] <= largeNum) {
						norepeat = true;
						for (int k = j - 1; k >= 0; k--){
							norepeat = norepeat && (number[j] != number[k]);
						}
					}
					if(norepeat) total++;
				}				
			}
			total = total / 2;
			fw.write(total + "\n");
		}
		fw.flush();
		fw.close();		
	}
}
