void setup() {
  Serial.begin(115200);

}

void loop() {

    int arr[3][5] = {{5, 12, 17, 9, 3}, {13, 4, 8, 14, 1}, {9, 6, 3, 7, 21}};

    for(int i=0; i<3; i++)
    {
        for(int j=0; j<5; j++)
        {
            Serial.println(arr[i][j]);
            delay(1000);

        }
    }
    return 0;

}