int red = A2;
                                                                        int blue = A3;
                                                                        int green= A6;
                                                                        void setup() 
                                                                        {
                                                                            
                                                                               pinMode(red, OUTPUT);
                                                                               pinMode(green, OUTPUT);
                                                                               pinMode(blue, OUTPUT);
                                                                               
                                                                                     
                                                                             
                                                                            }
                                                                            
                                                                            void loop() 
                                                                            {
                                                                                
                                                                                
                                                                                digitalWrite(red,LOW);
                                                                                delay(75);
                                                                                digitalWrite(green,LOW);
                                                                                delay(75);
                                                                                digitalWrite(blue,LOW);
                                                                                delay(75);
                                                                                
                                                                                digitalWrite(red,HIGH);
                                                                                delay(75);
                                                                                digitalWrite(green,HIGH);
                                                                                delay(75);
                                                                                digitalWrite(blue,HIGH);
                                                                                delay(75);
                                                                                
                                                                                digitalWrite(red,LOW);
                                                                                delay(75);
                                                                                digitalWrite(green,LOW);
                                                                                delay(75);
                                                                                digitalWrite(blue,LOW);
                                                                                delay(75);
                                                                                
                                                                                }