#define sp Serial.print;
#define spl Serial.println;
int cmax = 500;
 int parm[500][5];
void setup() {
  // put your setup code here, to run once:
  
  Serial.begin(9600);
  Serial.println("Start");
  for (int pc=1;pc<500;pc++)
  { for (int col=1;col<5;col++)
    { parm[pc][col] = pc*10+col;    }
  }
}

void loop() {
  // put your main code here, to run repeatedly:

  for (int pc=1;pc<500;pc++)
  { for (int col=1;col<5;col++)
    {  Serial.println(parm[pc][col]);   }
  }
  String cmd[] = {"u","w","d"};
  for (int i=0; i<=2;i++) {
     Serial.print(cmd[i]);
  }
  Serial.println();
  delay(1000);
}