import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

package qual;

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

class RecycledPair
{
	int a; 
	int b;
	
	public RecycledPair(int a, int b) {
		super();
		this.a = a;
		this.b = b;
	}

	@Override
	public int hashCode() {
		final int PRIME = 31;
		int result = 1;
		result = PRIME * result + (a + b);
		result = PRIME * result + (a + b);
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		final RecycledPair other = (RecycledPair) obj;
		if (a == other.a && b==other.b)
			return true;
		if (a == other.b && b==other.a)
		    return true;
		return false;
	}
	
	
	
}
public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		int T = in.nextInt();

		in.nextLine();

		for (int t = 0; t < T; t++) {
			String s = in.nextLine();
			String[] limit = s.split(" ");
			int A = Integer.parseInt(limit[0]);
			int B = Integer.parseInt(limit[1]);

			Set<RecycledPair> recycledPairsEncountered = new HashSet<RecycledPair>();

			int count = 0;
			for (int i = A; i <= B; i++) 
			{
				char[] num = String.valueOf(i).toCharArray();

				for (int k = num.length - 1; k >= 1; k--) 
				{
					String recycledNumber = "";
					if (num[k] != '0') 
					{
						int indx = k;
						while (indx < num.length)
							recycledNumber += num[indx++];
						indx = 0;
						while (indx < k)
							recycledNumber += num[indx++];
					}

					if (!recycledNumber.equals("")) 
					{
						int recycledNum = Integer.parseInt(recycledNumber);

						if (recycledNum != i
								&& recycledNum <= B
								&& recycledNum >= A)
						{
						     RecycledPair r = new RecycledPair(i, recycledNum);	
						     if(recycledPairsEncountered.contains(r)==false)
						     {
						    	 recycledPairsEncountered.add(r);
						     	 count++;
						     }
						}
					}
				}
			}

			System.out.println("Case #" + (t + 1) + ":" + " " + count);
		}
	}

}
