void setup() {
  // put your setup code here, to run once:
    pinMode(1, OUTPUT);
    pinMode(2, OUTPUT);
    pinMode(5, OUTPUT);
    pinMode(7, OUTPUT);
    pinMode(11,OUTPUT);
    pinMode(12,OUTPUT);
}
void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(1, HIGH);
digitalWrite(1, LOW);
delay(50);
digitalWrite(2, HIGH);
delay(50);
digitalWrite(2, LOW);
delay(50);
digitalWrite(5, HIGH);
delay(50);
digitalWrite(5, LOW);
delay(50);
digitalWrite(7, HIGH);
digitalWrite(7, LOW);
delay(50);
digitalWrite(11, HIGH);
digitalWrite(11, LOW);
delay(50);
digitalWrite(12, HIGH);
digitalWrite(12, LOW);
delay(50);
}