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.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class Recycled {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try{
			BufferedReader bf=null;
			try {
				int T;
				bf = new BufferedReader(new FileReader("src/com/codejam/input/C-small-attempt0.in"));
				T = Integer.parseInt(bf.readLine());
				for(int i=0;i<T;i++){
					String line = bf.readLine();
					String[] numbers = line.split(" ");
					int A = Integer.parseInt(numbers[0]);
					int B = Integer.parseInt(numbers[1]);
					int seq = A;
					int count=0;
					
					while(seq<B){
						count += checkRecycle(String.valueOf(seq), numbers[0], numbers[1]);
						seq++;
					}
					
					System.out.println("Case #"+(i+1)+": "+count);
					
				}
				
			} catch (FileNotFoundException e) {
				
				e.printStackTrace();
			} finally{
				bf.close();
			}
	
			
		}catch(IOException e){
			e.printStackTrace();
		}

	}
	
	public static int checkRecycle(String N,String min,String max){
	
		int mNum,nNum,maxNum;
		Set<String> uniqueNum = new HashSet<String>();
		
		for(int i=N.length()-1;i>0;i--){
			if( Character.getNumericValue(N.charAt(i)) > Character.getNumericValue(max.charAt(0)) ) continue;
			
			String M;
			M=N.substring(0, i);
			M=N.substring(i,N.length())+M;
		    mNum = Integer.parseInt(M);
			nNum = Integer.parseInt(N);
			maxNum = Integer.parseInt(max);
			if(mNum>nNum && mNum<=maxNum){
				uniqueNum.add(M);
			}
		}
		
		return uniqueNum.size();
	}

}
