#define led1 2
#define led2 4
#define led3 7
#define led4 8
#define led5 12
#define led6 13
#define led7 11
#define led8 10
#define led9 6
#define led10 5


void setup() {
  // put your setup code here, to run once:
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
pinMode(led8, OUTPUT);
pinMode(led9, OUTPUT);
pinMode(led10, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(led5, HIGH);delay(10);
digitalWrite(led4, HIGH);delay(10);
digitalWrite(led3, HIGH);delay(10);
digitalWrite(led2, HIGH);delay(10);
digitalWrite(led1, HIGH);delay(10);
digitalWrite(led1, LOW);delay(10);
digitalWrite(led2, LOW);delay(10);
digitalWrite(led3, LOW);delay(10);
digitalWrite(led4, LOW);delay(10);
digitalWrite(led5, LOW);delay(10);
digitalWrite(led6, HIGH);delay(10);
digitalWrite(led7, HIGH);delay(10);
digitalWrite(led8, HIGH);delay(10);
digitalWrite(led9, HIGH);delay(10);
digitalWrite(led10, HIGH);delay(10);
digitalWrite(led10, LOW);delay(10);
digitalWrite(led9, LOW);delay(10);
digitalWrite(led8, LOW);delay(10);
digitalWrite(led7, LOW);delay(10);
digitalWrite(led6, LOW);delay(10);
}