public class sucias{
    public static void main(String[] args){
        String sucia = args[0];
        char[] pedazos = sucia.toCharArray();
        StringBuilder caja = new StringBuilder();
        for(char c : pedazos){
            if(Character.isLetter(c)){
                caja.append(c);
            }
        }
        System.out.printf("El resultado es: %s \n",caja.toString());
    }
}