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);
		}
	}
}
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */


import java.io.*;
/**
 *
 * @author Joydeep
 */
public class J3 {
    public static void main(String[] args) throws IOException{
        String test = "150";

        DataInputStream ds = new DataInputStream(new FileInputStream("d:/C-large.in"));
        Writer os = new BufferedWriter(new FileWriter("d:/output1.txt"));
        int N = Integer.parseInt(ds.readLine());
        for(int i = 1;i<=N;i++)
        {
            int A=0,B=0,l,counter=0,n,m,pairs=0;
            String temp="";
            String output="Case #"+i+": ";
            String AB = ds.readLine()+" ";
            
            l = AB.length();
            for(int j = 0;j<l;j++)
            {
                char c = AB.charAt(j);
                if(c != ' ')
                {
                    temp = temp+c;
                }    
                else
                {
                  if(counter == 0)  
                  {
                      A = Integer.parseInt(temp);
                      temp = "";
                  }
                  else
                  {
                      B = Integer.parseInt(temp);
                      break;
                  }
                  counter++;
                 
                }
            }    

          
           
            for(n = A;n<=B;n++)
            {
                String check3=""+n;
                String part1,part2;
                String[] matches = new String[100];
                int c = 0;

                    String check = ""+n;

                    int l2 = check.length();
                    int p1 = l2-2;
                    int p2 = l2-1;
                    for(int x = 1;x<l2;x++)
                    {
                        if(p1==0)
                        {
                            part1 =""+ check.charAt(0);
                        }
                        else
                        {
                            part1=check.substring(0, p2);
                        }
                        
                      part2 = ""+check.charAt(p2);
                      check = part2+part1;
                      int num = Integer.parseInt(check);
                      if(num>n && num<=B)
                      {
                          int flag = 0;
                          for(int y = 0 ;y<c;y++)
                          {
                              if(check.equals(matches[y]))
                              {
                               flag = 1 ;  
                               break;
                              }
                          }
                          if(flag == 0)
                          {
                              pairs++;
                              matches[c++]=check;
                          }
                      }
                    }
            }
            output = output +pairs;
            os.write(output);
            String newLine = System.getProperty("line.separator");
            os.write(newLine);
        }
        ds.close();
        os.close();
    }
}