package it.simone.google.code.jam2012;

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

public class RecycledNumber implements GoogleCodeExercise {

	int a = 0;
	int b = 0;
	Set<Couple> distinctCouple = null;
	long maxTime = 0;

	private class Couple {
		int x = 0;
		int y = 0;

		public Couple(int x, int y) {
			this.x = x;
			this.y = y;
		}

		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + getOuterType().hashCode();
			result = prime * result + x;
			result = prime * result + y;
			return result;
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Couple other = (Couple) obj;
			if (!getOuterType().equals(other.getOuterType()))
				return false;
			if (x == other.x && y == other.y)
				return true;
			if (x == other.y && y == other.x)
				return true;
			return false;
		}

		private RecycledNumber getOuterType() {
			return RecycledNumber.this;
		}

	}

	@Override
	public String execute(String line) {
		int result = 0;

		String[] data = line.split(" ");
		a = Integer.parseInt(data[0]);
		b = Integer.parseInt(data[1]);
		initialize();

		int n = a;
		//
		while (n <= b) {
			result += analize(n);
			n++;
//			if (n % 1000 == 0)
//				System.out.println(n);
		}

		System.out.println(result);
		return "" + result;
	}

	@Override
	public void initialize() {
		distinctCouple = new HashSet<Couple>();
	}

	private int analize(int number) {
		String numString = "" + number;
		initialize();
		for (int i = 1; i < numString.length(); i++) {
			int m = shift(numString, i);
			if (a <= number && number < m && m <= b) {
				Couple couple=new Couple(number,m);
				if (!distinctCouple.contains(couple))
					distinctCouple.add(couple);
			}
		}
		return distinctCouple.size();
	}

	private int shift(String numString, int posx) {

		String result = null;
		result = "" + numString.substring(posx) + numString.substring(0, posx);

		return Integer.parseInt(result.toString());
	}

}

import java.util.Scanner;


public class Recycle {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int cases = Integer.parseInt(sc.nextLine());
		
		for(int i = 0; i < cases; i++) {
			Scanner line = new Scanner(sc.nextLine());
			int A = line.nextInt();
			int B = line.nextInt();			
			
			int k = Integer.toString(A).length();
			
			int fac = (int) (Math.pow(10, k-1));
			
			IntSet set = new IntSet(k);
			
			int pairCount = 0;
			for(int n = A; n < B; n++) {
				set.clear();
				int m = n;
				for(int j = 0; j < k-1; j++) {
					int mod = m % 10;
					m = m / 10;
					m = m + (fac * mod);
					if(m <= B && m > n) {
						//if not already there
						if(!set.insert(m)) {
							pairCount++;
						}
					}
				}
			}
			System.out.printf("Case #%d: %d\n", i+1, pairCount);
		}

	}
	

}

class IntSet {
	
	int[] ints;
	int ctr = 0;
	
	public IntSet(int k) {
		ints = new int[k];
		ctr = 0;
	}
	
	public boolean contains(int x) {
		for(int i = 0; i < ctr; i++) {
			if(ints[i] == x) {
				return true;
			}
		}
		return false;
	}
	
	//true if x already contained
	public boolean insert(int x) {
		if(contains(x)) {
			return true;
		}
		ints[ctr] = x;
		ctr++;
		return false;
	}
	
	public void clear() {
		ctr = 0;
	}
}