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.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;


public class rec1 {
	public static void main(String args[]) throws Exception{
		FileInputStream fs = new FileInputStream("in1.txt");
	    DataInputStream in = new DataInputStream(fs);
	    BufferedReader br=new BufferedReader(new InputStreamReader(in));
	    FileWriter fstream = new FileWriter("out2.txt");
		BufferedWriter out = new BufferedWriter(fstream);
		int T=Integer.parseInt(br.readLine());
	    for(int i=0;i<T;i++){
	    	int temp=0;
	    	int[] found=new int[100000];
	    	int count=0;
	    	String str=br.readLine();
	    	String str1[]=str.split(" ");
	    	int nod=str1[1].length();
	    	int A=Integer.parseInt(str1[0]);
	    	int B=Integer.parseInt(str1[1]);
	    	for(int x=A;x<=B;x++){
	    		if(!isfound(x,found)){
	    			int t=1;
	    			int a=x;
	    			found[temp++]=a;
	    			int n1=nod-1;
	    			for(int k=0;k<n1;k++){
	    				int b=((a%10)*((int)Math.pow(10,n1)))+(a/10);
	    				if(b!=x && (!isfound(b,found)) && b<=B && A<=b){
	    					t++;
	    					found[temp++]=b;
	    				}
	    				a=b;	    			
	    			}
	    			count=count+((t*(t-1))/2);
	    		}
	    	}
	    	out.write("Case #"+(i+1)+": "+count);
			out.newLine();
	    }
	    out.close();
		br.close();
	   }
	public static boolean isfound(int current_no,int found[]){
		int len=found.length;
		for(int i=0;i<len;i++){
			if(found[i]==current_no)
				return true;
		}
		return false;
	}
}
