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.File;
import java.util.HashMap;
import java.util.StringTokenizer;
import java.io.FileReader;
public class C {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception  {
		BufferedReader reader = null;
		String fileName = "C-large.in";
		String outputFileName=fileName.replace(".in", ".out");
		reader=new BufferedReader(new FileReader(fileName));
		File outFile=new File(outputFileName);
		outFile.createNewFile();
		int T = Integer.parseInt(reader.readLine());
		for (int i = 1; i <=T; i++) {
			StringTokenizer t=new StringTokenizer(reader.readLine()," ");
			int start=Integer.parseInt(t.nextToken());
			int end=Integer.parseInt(t.nextToken());
			int count=0;
			HashMap<String,String> map=new HashMap<String,String>();
			for(int j=start;j<end;j++){
				String s=j+"";
				for(int k=1;k<s.length();k++){
					String ss=s.substring(s.length()-k);
					String es=s.substring(0,s.length()-k);
					if(ss.startsWith("0"))continue;
					int num=Integer.parseInt(ss+""+es);
					if(num<=end && num>=start && num>j){
						String key=j+"_"+num;
						if(map.get(key)==null){
							map.put(key, key);
							count++;
						}
					}
				}
			}
			System.out.println("Case #"+i+": "+count);
		
		}

	}

}
