import java.util.*;
import java.io.*;

public class recycled_numbers {
	public static void main(String[]a) throws Exception{
		
		Scanner f = new Scanner(new File(a[0]));
		int result=0;
		int A,B;
		String n,m;
		HashSet<String> s=new HashSet<String>();
		
		int T=f.nextInt();	//T total case count
		for (int t=1; t<=T;t++){//for each case t
			
			s.clear();
			result=0;				//reset
			A=f.nextInt();B=f.nextInt();	//get values for next case
			
			if (A==B)result=0;//remove case not meeting problem limits 
			else{
				for(int i=A;i<=B;i++){//for each int in range
					n=Integer.toString(i);
					m=new String(n);
					//System.out.println(n);
					for (int j=1;j<n.length();j++){//move each digit to the front & test
						m = m.substring(m.length()-1)+m.substring(0,m.length()-1);
						if(m.matches("^0+[\\d]+")!=true &&
								Integer.parseInt(m)<=B &&
								Integer.parseInt(n)<Integer.parseInt(m)){
							s.add(new String(n+","+m));
							//result++;
							//System.out.println(" matched: "+m);
						}
						
					}
				}
				result = s.size();
			}

			//display output
			System.out.println("Case #" + t + ": " + result);
		}
	}
}
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.StringTokenizer;


public class RecycledNumbers {
	public static int calcRecycled(int A, int B) {
		int total = 0;
		for(int i = 0; i < B-A+1; i++) {
			int[] temp = getCycles(i+A);
			for(int x: temp) {
				if(x == -1)
					continue;
				if(x <= i+A)
					continue;
				if(x <= B && x >= A) {
					total++;
				}
			}
		}
		return total;
	}
	public static int[] getCycles(int init) {
		String s = init+"";
		int[] array = new int[s.length()-1];
		for(int i = 0; i < s.length()-1; i++) {
			if(s.charAt(i+1) == '0')
				array[i] = -1;
			else {
				int temp = Integer.parseInt(s.substring(i+1) + s.substring(0, i+1));
				for(int j = 0; j < i; j++) {
					if(array[j] == temp) {
						temp = -1;
						break;
					}
				}
				array[i] = temp;
			}
		}
		return array;
	}
	public static void main(String[] args) throws IOException {
		BufferedReader read = new BufferedReader(new FileReader("C-large.in.txt"));
		int T = Integer.parseInt(read.readLine());
		for(int i = 1; i <= T; i++){
			StringTokenizer st = new StringTokenizer(read.readLine());
			int A = Integer.parseInt(st.nextToken());
			int B = Integer.parseInt(st.nextToken());
			System.out.println("Case #" + i + ": " + calcRecycled(A, B));
		}
	}
}
