#define P1_R 9;
#define P1_G 8;
#define P2_R 7;
#define P2_G 6;
#define P3_R 5;
#define P3_G 4;
#define P4_R 3;
#define P4_B 2;
int i ; 

void setup()
{ 

for(i=2;i<=9;i++)
 pinMode(i, OUTPUT);
}
void loop() 
{
  for(i=2;i<=9;i++)
  {
    digitalWrite(i,1);
    delay(1000);
    digitalWrite(i,0);
  }

  

  
}