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.*;
public class GoogleCodeJam3 
{
  public static void main(String[] args) throws IOException 
   {
        FileInputStream fstreami = new FileInputStream("input.txt");
        DataInputStream in = new DataInputStream(fstreami);
        FileWriter fstreamo = new FileWriter("output.txt");
        BufferedWriter out = new BufferedWriter(fstreamo);
        int testCases = Integer.parseInt(in.readLine());
        int i = 0;
        String [] input;
        while (i < testCases)
        {
            input = in.readLine().split(" ");
            int A = Integer.parseInt(input[0]);
            int B = Integer.parseInt(input[1]);
            int testNum = A;
            int pairs = 0;
            int len = Integer.toString(A).length();
            while(testNum <= B)
            {
				String st = Integer.toString(testNum);
				int [] testing = new int[len];
				int index = 0;
				for(int j = 0; j < len-1; j++)
				{
                    st = st.substring(len-1, len) + st.substring(0,len-1);
                    int newNum = Integer.parseInt(st);
 	//				System.out.println(newNum);
                  if ((newNum > testNum) && (newNum <= B))
                    {
                        boolean bool = false;
                        for (int k = 0; k < index; k++)
                        {
                            if (testing[k] == newNum)
                            {
	//							System.out.println("fuckfuckfuckfuckfuckfuckfuck");
                                bool = true; break;
                            }
                        }
                        if (bool == false)
                        {
                           pairs++;
                           testing[index] = newNum;
						   index++;
                        }
                    }
                }
                testNum++;
            }
            out.write("Case #" + (i+1) + ": " + pairs + "\n");
            i++;
        }
        in.close();
	out.close();
   }
}