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.io.File;
import java.io.FileNotFoundException;
import java.lang.Integer;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.TreeSet;

public class RecycledNumbers {
    public static void main(String[] args) throws FileNotFoundException {
        Scanner sc = new Scanner(new File("input.in"));
        //Scanner sc = new Scanner(System.in);
        int T=sc.nextInt();

        for( int i=0;i<T;i++) {
            int count =0;
            int A = sc.nextInt();
            int B = sc.nextInt();
            int n = A;
            for(n=A;n<B;n++) {
                int l = Integer.toString(n).length();
                int n2=n;
                int n5=1;
               TreeSet<Integer> L = new TreeSet<Integer>();
                for(int j=1;j<l;j++){
                    n5=n5*10;
                }
                for(int j=1;j<l;j++) {
                    int n3=n2/10;
                    int n4=n2%10;
                    n2=n5*n4+n3;
                   
                    if(n2>n && n2<=B) {
                        if(!L.contains(n2)) {
                            L.add(n2);
                            count ++;
                        }
                    }
                }
            }
            System.out.println("Case #"+(i+1)+": "+count);
        }
    }
}
