int red1 = 13;
int blue2 = 12;
int green3 = 11;

int red4 = 10;
int blue5 = 9;
int green6 = 8;

int red7 = 7;
int blue8 = 6;
int green9 = 5;

int red10 = 4;
int blue11 = 3;
int green12 = 2;


void setup()
{
 pinMode(red1, OUTPUT);
 pinMode(blue2, OUTPUT);
 pinMode(green3, OUTPUT);

 pinMode(red4, OUTPUT);
 pinMode(blue5, OUTPUT);
 pinMode(green6, OUTPUT);

 pinMode(red7, OUTPUT);
 pinMode(blue8, OUTPUT);
 pinMode(green9, OUTPUT);

 pinMode(red10, OUTPUT);
 pinMode(blue11, OUTPUT);
 pinMode(green12, OUTPUT);
}

void loop()
{
  digitalWrite(red1,1);
  digitalWrite(blue2,0);
  digitalWrite(green3,0);
  
  digitalWrite(red4,0);
  digitalWrite(blue5,1);
  digitalWrite(green6,0);
  
  digitalWrite(red7,0);
  digitalWrite(blue8,0);
  digitalWrite(green9,1);

  digitalWrite(red10,1);
  digitalWrite(blue11,0);
  digitalWrite(green12,1);
delay(2000);


  digitalWrite(red1, 0);
  digitalWrite(blue2,0);
  digitalWrite(green3,0);

  digitalWrite(red4, 0);
  digitalWrite(blue5,0);
  digitalWrite(green6,0);

  digitalWrite(red7, 0);
  digitalWrite(blue8,0);
  digitalWrite(green9,0);

  digitalWrite(red10,0);
digitalWrite(blue11,0);
digitalWrite(green12,0);

  delay(1000);
}