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.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.StringTokenizer;


public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		RecycledNumbers r = new RecycledNumbers();
		r.run("C-small.in", "C-small.out");
	}
	
	public void run(String input, String output) throws IOException {
		BufferedReader br = new BufferedReader(new FileReader(input));
		FileWriter fw = new FileWriter(output);
		long C = 0;
		int N = new Integer(br.readLine());
		for (int cases = 1; cases <= N; cases++) {
			StringTokenizer st = new StringTokenizer(br.readLine());
			long A = new Long(st.nextToken());
			long B = new Long(st.nextToken());
			C = count(A, B);
			fw.write("Case #" + cases + ": " + C + "\n");
		}
		fw.flush();
		fw.close();
	}
	
	public long count(long A, long B) {
		int recycledPairs = 0;
		for (long K = A; K <= B; K++) {
			int n = digits(K);
			int pairs = 0;
			long[] a = new long[n - 1];
			for (int i = 1; i < n; i++) {
				long divisor = (long) Math.pow(10, i);
				long R = (K % divisor) * (long) Math.pow(10, n - i) + (K / divisor);
				if (R > K && R <=B) {
					boolean repeat = false;
					for (int j = 0; j < pairs; j++) {
						if (R == a[j]) {
							repeat = true;
							break;
						}
					}
					if (!repeat) {
						a[pairs] = R;
						pairs++;
						recycledPairs++;
					}
				}
			}
		}
		return recycledPairs;
	}
	
	public int digits(long k) {
		int length = 0;
		for (int i = 0; i < 8; i++) {
			k /= 10;
			length++;
			if (k == 0)
				break;
		}
		return length;
	}
}
