uint8_t LEDS[3] {12, 11, 10};
uint8_t BUTTON = A0;

uint8_t MAP[6][3]  {
  {1, 0, 0},
  {1, 1, 0},
  {1, 1, 1},
  {0, 1, 1},
  {0, 0, 1},
  {0, 0, 0}
};
uint8_t count = 0;

void setup() {
  Serial.begin(115200);
  for (uint8_t i = 0; i < 3; i++) {
    pinMode(LEDS[i], OUTPUT);
  }
  pinMode(BUTTON, INPUT_PULLUP);
}

void loop() {
  if (!digitalRead(BUTTON)) {
    for (uint8_t i = 0; i < 3; i++) {
      digitalWrite(LEDS[i], MAP[count][i]);
    }
    if (++count > 5) count = 0;
    delay(200);
  }
}