package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class ProblemSample implements Problem {

    private int solution;

    private int A;

    @Override
    public void solve() {

        int resultat = 0;

        for (int n = A; n <= B; n++) {

            // on trouve toutes les rotations de n
            String stringN = Integer.toString(n);
            int size = stringN.length();

            Set<Integer> mySet = new HashSet<Integer>();

            for (int i = 0; i < size; i++) {
                String actuel = rotation(stringN, size, i);
                // le set contient les candidats mais pas les doublons
                mySet.add(Integer.parseInt(actuel));
            }

            // on vÃ©rifie si les rotations trouvÃ©es sont bonnes ou pas.
            for (Integer candidat : mySet) {
                if (candidat > n && candidat <= B) {
                    // si la solution est bonne alors on incrÃ©mente.
                    resultat++;
                }
            }
        }
        this.setSolution(resultat);
    }

    private String rotation(String stringN, int size, int nbRotation) {
        String res = stringN;
        return res.substring(size - nbRotation, size) + res.substring(0, size - nbRotation);
    }

    @Override
    public Object getSolution() {
        return solution;
    }

    public void setSolution(int solution) {
        this.solution = solution;
    }

    public int getA() {
        return A;
    }

    public void setA(int a) {
        A = a;
    }

    public int getB() {
        return B;
    }

    public void setB(int b) {
        B = b;
    }

    public List<Integer> getSums() {
        return sums;
    }

    public void setSums(List<Integer> sums) {
        this.sums = sums;
    }

    private int B;

    private List<Integer> sums = new ArrayList<Integer>();

}