import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class RecycledNumbers {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int noCases = in.nextInt();
		
		for(int i = 0; i < noCases; i++){
			int a = in.nextInt();
			int b = in.nextInt();
			int noDigits = Integer.toString(a).length();
			Set<Pair> checkedPairs = new HashSet<Pair>();
			
			for(int number = a; number <= b; number++){
				for (int digit = 1; digit < noDigits; digit++) {
					if(number % Math.pow(10, digit) == 0){
						continue;
					}
					int rotatedNumber = rotate(number, digit, noDigits);
					Pair pair = new Pair(rotatedNumber,number);
					if (rotatedNumber >= a && rotatedNumber <= b
							&& !checkedPairs.contains(pair)
							&& number != rotatedNumber) {
						checkedPairs.add(pair);
					}
				}
			}
			
			System.out.println("Case #"+(i+1)+": " + checkedPairs.size());
		}
	}
	
	
	static class Pair{
		int value1, value2;
		public Pair(int value1, int value2){
			this.value1 = value1;
			this.value2 = value2;
		}
		
		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + (value1+value2);
			return result;
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Pair other = (Pair) obj;
			if (value1 != other.value1 && value1 != other.value2)
				return false;
			if (value2 != other.value2 && value2 != other.value1)
				return false;
			return true;
		}
		public String toString(){
			return "("+value1+","+value2+")";
		}
	}
	
	public static int rotate(int number, int noPlaces, int noDigits){
		int rotatedNumber = number;
		int divider = (int) Math.pow(10, noDigits-1);
		for(int i = 0; i < noPlaces; i++){
			int digit = rotatedNumber % 10;
			rotatedNumber = digit*divider + rotatedNumber / 10;
		}
		return rotatedNumber;
		
	}

}
