int ledm=5;
int ledk=6;
int ledh=4;

void setup() {
  //put your setup code here, to run once:
Serial.begin(9600);
pinMode(ledm, OUTPUT);
pinMode(ledk, OUTPUT);
pinMode(ledh, OUTPUT);
}

void loop() {
  //put your main code here, to run repeatedly:
digitalWrite(ledm, HIGH);
delay(1000);
digitalWrite(ledk, HIGH);
delay(1000);
digitalWrite(ledh, HIGH);
delay(1000);
digitalWrite(ledm, LOW);
delay(500);
digitalWrite(ledk, LOW);
delay(500);
digitalWrite(ledh, LOW);
delay(500);
}