void setup() {pinMode(13, OUTPUT);
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
pinMode(10, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
pinMode(5, OUTPUT);
pinMode(4, OUTPUT);
pinMode(A0, OUTPUT);


 
}

void loop() {
digitalWrite(13, HIGH);delay(250);
digitalWrite(13, LOW);delay(250);
digitalWrite(13, HIGH);delay(250);
digitalWrite(12, HIGH);delay(250);
digitalWrite(13, LOW);delay(250);
digitalWrite(12, LOW);delay(250);
digitalWrite(13, HIGH);delay(250);
digitalWrite(12, HIGH);delay(250);
digitalWrite(11, HIGH);delay(250);
digitalWrite(13, LOW);delay(250);
digitalWrite(12, LOW);delay(250);
digitalWrite(11, LOW);delay(250);
digitalWrite(13, HIGH);delay(250);
digitalWrite(12, HIGH);delay(250);
digitalWrite(11, HIGH);delay(250);
digitalWrite(10, HIGH);delay(250);
digitalWrite(13, LOW);delay(250);
digitalWrite(12, LOW);delay(250);
digitalWrite(11, LOW);delay(250);
digitalWrite(10, LOW);delay(250);
digitalWrite(12, HIGH);delay(250);
digitalWrite(11, HIGH);delay(250);
digitalWrite(10, HIGH);delay(250);
digitalWrite(9, HIGH);delay(250);
digitalWrite(12, LOW);delay(250);
digitalWrite(11, LOW);delay(250);
digitalWrite(10, LOW);delay(250);
digitalWrite(9, LOW);delay(250);
digitalWrite(11, HIGH);delay(250);
digitalWrite(10, HIGH);delay(250);
digitalWrite(9, HIGH);delay(250);
digitalWrite(8, HIGH);delay(250);
digitalWrite(11, LOW);delay(250);
digitalWrite(10, LOW);delay(250);
digitalWrite(9,LOW);delay(250);
digitalWrite(8, LOW);delay(250);
digitalWrite(10, HIGH);delay(250);
digitalWrite(9, HIGH);delay(250);
digitalWrite(8, HIGH);delay(250);
digitalWrite(7, HIGH);delay(250);
digitalWrite(10, LOW);delay(250);
digitalWrite(9,LOW);delay(250);
digitalWrite(8, LOW);delay(250);
digitalWrite(7, LOW);delay(250);
digitalWrite(9, HIGH);delay(250);
digitalWrite(8, HIGH);delay(250);
digitalWrite(7, HIGH);delay(250);
digitalWrite(6, HIGH);delay(250);
digitalWrite(9, LOW);delay(250);
digitalWrite(8, LOW);delay(250);
digitalWrite(7, LOW);delay(250);
digitalWrite(6, LOW);delay(250);

}