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();
    }
}

import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;


public class C {
	
	C() {
		Scanner in=new Scanner(System.in);
		for (int T=in.nextInt(),TC=1; T-->0; ++TC) {
			int A=in.nextInt(),B=in.nextInt();
			int cnt=0;
			for (int m=2; m<=B; ++m)
				cnt+=count(A,m);
			System.out.printf("Case #%d: %d%n", TC,cnt);
		}
	}
	
	int count(int A, int m) {
		String s = Integer.toString(m); // 345
		Set<Integer> set=new TreeSet<Integer>();
		for (int i=1; i<s.length(); ++i) {
			if (s.charAt(i)!='0') {
				String t = s.substring(i)+s.substring(0,i);
				int n = new Integer(t);
				if (A<=n && n<m)
					set.add(n);
			}
		}
		return set.size();
	}

	public static void main(String[] args) {
		new C();
	}

}
