int _led_L1 = 0;
int _led_L2 = 1;
int _led_L3 = 2;
int _led_L4 = 3;
int _led_L5 = 4;
int _led_L6 = 5;
int _led_L10 = 9;
int _led_L7 = 6;
int _led_L8 = 7;
int _led_L12 = 11;
int _led_L9 = 8;
int _led_L11 = 10;
int _led_L14 = 13;
int _led_L13 = 12;
void setup()
{
    pinMode(_led_L1, OUTPUT);
    pinMode(_led_L2, OUTPUT);
    pinMode(_led_L3, OUTPUT);
    pinMode(_led_L4, OUTPUT);
    pinMode(_led_L5, OUTPUT);
    pinMode(_led_L6, OUTPUT);
    pinMode(_led_L10, OUTPUT);
    pinMode(_led_L7, OUTPUT);
    pinMode(_led_L8, OUTPUT);
    pinMode(_led_L12, OUTPUT);
    pinMode(_led_L9, OUTPUT);
    pinMode(_led_L11, OUTPUT);
    pinMode(_led_L14, OUTPUT);
    pinMode(_led_L13, OUTPUT);
}

void loop()
{
    digitalWrite(_led_L1, HIGH);
    delay(500);
    digitalWrite(_led_L1, LOW);
    digitalWrite(_led_L2, HIGH);
    delay(500);
    digitalWrite(_led_L2, LOW);
    digitalWrite(_led_L3, HIGH);
    delay(500);
    digitalWrite(_led_L3, LOW);
    digitalWrite(_led_L4, HIGH);
    delay(500);
    digitalWrite(_led_L4, LOW);
    digitalWrite(_led_L5, HIGH);
    delay(500);
    digitalWrite(_led_L5, LOW);
    digitalWrite(_led_L6, HIGH);
    delay(500);
    digitalWrite(_led_L6, LOW);
    digitalWrite(_led_L7, HIGH);
    delay(500);
    digitalWrite(_led_L7, LOW);
    digitalWrite(_led_L8, HIGH);
    delay(500);
    digitalWrite(_led_L8, LOW);
    digitalWrite(_led_L9, HIGH);
    delay(500);
    digitalWrite(_led_L9, LOW);
    digitalWrite(_led_L10, HIGH);
    delay(500);
    digitalWrite(_led_L10, LOW);
    digitalWrite(_led_L11, HIGH);
    delay(500);
    digitalWrite(_led_L11, LOW);
    digitalWrite(_led_L12, HIGH);
    delay(500);
    digitalWrite(_led_L12, LOW);
    digitalWrite(_led_L13, HIGH);
    delay(500);
    digitalWrite(_led_L13, LOW);
    digitalWrite(_led_L14, HIGH);
    delay(500);
    digitalWrite(_led_L14, LOW);
}