const int purple=7;
const int pink=6;
const int green=5;
//--------------------------------------------------------------
void setup() {
// put your setup code here, to run once:
pinMode(purple, OUTPUT);
pinMode(pink, OUTPUT);
pinMode(green, OUTPUT);
}
//--------------------------------------------------------------
void purple (int a){

  digitalWrite(pink,LOW);
  digitalWrite(green,LOW);
  digitalWrite(purple,LOW);
  delay(a);
}
//--------------------------------------------------------------
void pur_pin (int a){
  digitalWrite(purple, HIGH);
  digitalWrite(pink, HIGH);
  delay(a);
  digitalWrite(purple, LOW);
  digitalWrite(pink, LOW);
}
//--------------------------------------------------------------
void green (int a){
  digitalWrite(purple, LOW);
  digitalWrite(pink, LOW);
  digitalWrite(green, HIGH);
  delay(a);
  for (int i=0;i<5;i++){
    digitalWrite(green, LOW);
    delay(250);
    digitalWrite(green, HIGH);
    delay(250);
  }
  digitalWrite(green, LOW);
  digitalWrite(pink, HIGH);
  delay(a);
}
//-------------------------------------------------------------
void loop() {
// put your main code here, to run repeatedly:
purple(3000);
pur_pin(2000);
green(2000);
}