int lights0 = A0;
int lights1 = A1;
int lights2 = A2;
int lights3 = A3;
int lights4 = A4;


void setup() {
  // put your setup code here, to run once:
pinMode(lights0, OUTPUT);
pinMode(lights1, OUTPUT);
pinMode(lights2, OUTPUT);
pinMode(lights3, OUTPUT);
pinMode(lights4, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:

digitalWrite(lights0, HIGH);
digitalWrite(lights1, LOW);
digitalWrite(lights2, LOW);
digitalWrite(lights3, LOW);
digitalWrite(lights4, LOW);
delay(500);

digitalWrite(lights0, LOW);
digitalWrite(lights1, HIGH);
digitalWrite(lights2, LOW);
digitalWrite(lights3, LOW);
digitalWrite(lights4, LOW);
delay(500);

digitalWrite(lights0, LOW);
digitalWrite(lights1, LOW);
digitalWrite(lights2, HIGH);
digitalWrite(lights3, LOW);
digitalWrite(lights4, LOW);
delay(500);

digitalWrite(lights0, LOW);
digitalWrite(lights1, LOW);
digitalWrite(lights2, LOW);
digitalWrite(lights3, HIGH);
digitalWrite(lights4, LOW);
delay(500);

digitalWrite(lights0, LOW);
digitalWrite(lights1, LOW);
digitalWrite(lights2, LOW);
digitalWrite(lights3, LOW);
digitalWrite(lights4, HIGH);
delay(500);


}