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.FileReader;


public class RecycledNumbers {

	public static void main(String[] args) {
		RecycledNumbers temp = new RecycledNumbers();
		temp.findPairs();
	}
	
	void findPairs(){
		String myFileName = "D:\\testcase.txt";
		try {
			BufferedReader myReader = new BufferedReader(new FileReader(myFileName));
			int myTestCases = 0;
			myTestCases = Integer.parseInt(myReader.readLine());
			
			for(int i=0; i<myTestCases; i++){
				String[] temp = myReader.readLine().split(" ");
				int A = Integer.parseInt(temp[0]);
				int B = Integer.parseInt(temp[1]);
				int j = A;
				int count = 0;
				int size = (j+"").length();
				
				while(j <= B){
					
					int[] myNumbers = new int[size];
					int myNumIndex = 0;
					String newNumber = "";
					
					for(int k=0; k < size-1; k++){
						
						if(size < 2)
							break;
						String number = new String(""+j);
						
						if(k == 0){
							if(number.charAt(size - 1) == '0'){
								newNumber = ""+number.charAt(size - 1)+number.substring(0, size - 1);
								continue;
							}
							newNumber = ""+number.charAt(size - 1)+number.substring(0, size - 1);
						}else{
							if(newNumber.charAt(size - 1) == '0'){
								newNumber = ""+newNumber.charAt(size - 1)+newNumber.substring(0, size - 1);
								continue;
							}
							newNumber = ""+newNumber.charAt(size - 1)+newNumber.substring(0, size - 1);
						}
						
						int check = Integer.parseInt(newNumber);
						if(check <= B && check > j && check >= A){
							boolean found = false;
							for(int z=0; z < size; z++){
								if(myNumbers[z] == check)
									found = true;
							}
							if(!found){
								count++;
								myNumbers[myNumIndex]=check;
								myNumIndex = myNumIndex+1;
								//System.out.println("("+j+", "+newNumber+")");
							}
						}
					}
					j++;
				}
				System.out.println("Case #"+(i+1)+": "+count);
			}
			} catch (NumberFormatException e) {
				e.printStackTrace();
			} catch (Exception e) {
				e.printStackTrace();
			}
	}

}
