/***   Global variables   ***/
 
/***   Function declaration   ***/
 
void setup()
{
 
  pinMode(12,OUTPUT);
  pinMode(9,OUTPUT);
  pinMode(7,OUTPUT);
  pinMode(8,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(11,OUTPUT);
 
}
 
 
void loop()
{
    digitalWrite(12,HIGH);
    digitalWrite(9,HIGH);
    delay(2000);
    digitalWrite(9,LOW);
    digitalWrite(7,HIGH);
    delay(5000);
    digitalWrite(7,LOW);
    digitalWrite(8,HIGH);
    delay(5000);
    digitalWrite(8,LOW);
    digitalWrite(9,HIGH);
    delay(3000);
    digitalWrite(12,LOW);
    digitalWrite(10,HIGH);
    delay(5000);
    digitalWrite(10,LOW);
    digitalWrite(11,HIGH);
    delay(5000);
    digitalWrite(11,LOW);
 
}
 
/***   Function definition   ***/