import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;


public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub
		int ten[]=new int[10];
		ten[1]=1;
		for(int i=2;i<10;ten[i]=ten[i-1]*10,i++);	
		
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(System.out));
		StringTokenizer st;
		int T=Integer.parseInt(br.readLine());
		for(int cn=1;cn<=T;cn++){
			st=new StringTokenizer(br.readLine());
			int A=Integer.parseInt(st.nextToken());
			int B=Integer.parseInt(st.nextToken());
			int n=(A+"").length();
			int ctr=0;
			boolean marked[]=new boolean[2000001];
			for(int a=A;a<=B;a++){
				if(marked[a])
					continue;
				int i=1;
				int b=a;
				for(int j=1;j<n;j++){
					b=b/10+(b%10)*ten[n];
					if(b>a&&b<=B&&!marked[b]){
						i++;
						marked[b]=true;
//						System.out.println(a+" "+b);
					}
				}
				ctr+=i*(i-1)/2;
//				System.out.println(">"+ctr);
			}
			System.out.println("Case #"+cn+": "+ctr);
		}
	}

}
