public class Main1 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("hello world");
        Scanner in = new Scanner(System.in);
        
        String s=in.nextLine();
        
        vavidIP(s);


    }

    private static void vavidIP(String s) {
        // TODO Auto-generated method stub
        int len = s.length();
        for (int i = 1; i <=3; ++i){  // first cut
            if (len-i > 9) continue;            
            for (int j = i+1; j<=i+3; ++j){  //second cut
                if (len-j > 6) continue;                
                for (int k = j+1; k<=j+3 && k<len; ++k){  // third cut
                    int a,b,c,d;                // the four int's seperated by "."
                    a = Integer.parseInt(s.substring(0,i));  
                    b = Integer.parseInt(s.substring(i,j)); // notice that "01" can be parsed into 1. Need to deal with that later.
                    c = Integer.parseInt(s.substring(j,k));
                    d = Integer.parseInt(s.substring(k));
                    if (a>255 || b>255 || c>255 || d>255) continue; 
                    String ip = a+"."+b+"."+c+"."+d;
                    if (ip.length()<len+3) continue;  // this is to reject those int's parsed from "01" or "00"-like substrings
                    System.out.println(ip);
                }
            }
        }
        
    }
    
    
    public static boolean isValid(String s){
        if(s.length()>3 || s.length()==0 || (s.charAt(0)=='0' && s.length()>1) || Integer.parseInt(s)>255)
            return false;
        return true;
    }


}