import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;


public class C {

	Map<String, Set<Integer>> map = new HashMap<String, Set<Integer>>();
	
	Set<int[]> pairs = new HashSet<int[]>();
	
	public C() {
		for (int i=1; i<=2000000; i++) {
			char ch[] = (""+i).toCharArray();
			Arrays.sort(ch);
			String key = new String (ch);

			Set<Integer> val = map.containsKey(key)?map.get(key): new HashSet<Integer>();
			val.add(i);
			map.put(key, val);
		}

		System.out.println("Done..\n");
		
		compute(1,2000000);
	}

	boolean rot (int a, int b) {
		String A = ""+a;
		String B = ""+b;
		for (int i=1; i<A.length(); i++) {
			String r = B.substring(i) + B.substring(0, i);
			//System.out.println(r);
			if (r.equals(A))
				return true;
		}
		return false;
	}

	int compute (int A, int B) {
		int total = 0;
		HashSet<String> stopList = new HashSet<String>();
		for (int i=A; i<=B; i++) {
			char ch[] = (""+i).toCharArray();
			Arrays.sort(ch);
			String key = new String (ch);

			if (stopList.contains(key))
				continue;
			Object values[] = map.get(key).toArray();
			for (int j=0; j<values.length; j++) {
				int valJ = (Integer)values[j];
				if (valJ>=A && valJ<=B) {
					for (int k=j+1; k<values.length; k++) {
						int valK = (Integer)values[k];
						if (valK>=A && valK<=B) {
							if (rot(valJ, valK)) {
								total++;
								//System.out.println(valJ+", "+valK);
								int pair[] = new int[2];
								pair[0] = Math.min(valJ, valK);
								pair[1] = Math.max(valJ, valK);
								pairs.add(pair);
							}
						}
					}

				}
			}
			stopList.add(key);


		}
		
		System.out.println("Pairs: "+pairs.size());
		return total;
	}

	/*int answer (int A, int B) {
		int total = 0;
		HashSet<String> stopList = new HashSet<String>();
		for (int i=A; i<=B; i++) {
			char ch[] = (""+i).toCharArray();
			Arrays.sort(ch);
			String key = new String (ch);

			if (stopList.contains(key))
				continue;
			Object values[] = map.get(key).toArray();
			for (int j=0; j<values.length; j++) {
				int valJ = (Integer)values[j];
				if (valJ>=A && valJ<=B) {
					for (int k=j+1; k<values.length; k++) {
						int valK = (Integer)values[k];
						if (valK>=A && valK<=B) {
							if (rot(valJ, valK)) {
								total++;
								//System.out.println(valJ+", "+valK);
							}
						}
					}

				}
			}
			stopList.add(key);


		}
		return total;
	}*/
	
	int answer (int A, int B) {
		int count=0;
		for (int[]pair: pairs) {
			if (pair[0]>=A && pair[1]<=B)
				count++;
		}
		return count;
	}

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		C c = new C();
		
		//System.out.println(c.rot(12345, 45123));
		int T = sc.nextInt();

		for (int i=0; i<T; i++) {
			int A = sc.nextInt();
			int B = sc.nextInt();

			System.out.println("Case #"+(i+1)+": "+c.answer(A, B));
		}
	}
}
