import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;

public class Main {

	public static void main(String[] args) {
		try {
			BufferedReader br = new BufferedReader(new FileReader("C-small-attempt1.in"));
			PrintWriter bw = new PrintWriter(new FileWriter("C-small-attempt1.out"));
			
			int num = Integer.parseInt(br.readLine());
			
			for (int i = 0; i < num; i++) {
				String[] content=br.readLine().split("[ ]");
				int start=Integer.parseInt(content[0]);
				int end=Integer.parseInt(content[1]);
				int count=0;
				for (int j = start; j <end; j++) {
					int j_num=0;
					int temp=j;
					while(temp!=0)
					{
						temp/=10;
						j_num++;
					}
					int j2_end=end;
					int j_end=(int)Math.pow(10, j_num)-1;
					if(j_end<end)
						j2_end=j_end;
					String srcString=String.valueOf(j);
					//System.out.println("j"+srcString+","+j2_end);
//					char src[srcString.length()];
//					int length=srcString.length();
//					for (int k = 0; k < length; k++) {
//						src[i]=srcString.charAt(i);
//					}
					for (int j2 = j+1; j2 <=j2_end; j2++) {
						String desString=j2+"";
						int lengths=desString.length();
						char[] des = new char[lengths*2];
						for (int k = 0; k < lengths; k++) {
							des[k]=desString.charAt(k);
						}
						for (int l = 0; l < lengths; l++) {
							des[lengths+l]=des[l];
							String reString=new String(des, l+1, lengths);
							//System.out.println(reString+"l");
							if (reString.equals(srcString)) {
								count++;
								break;
							}
						}
					}
				}
				bw.println("Case #"+(i+1)+": "+count );
			}
			
			br.close();
			bw.close();
			
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}
