int led01=5;
int led02=6;
int led03=4;
void setup() {
 pinMode(led01,OUTPUT); 
 pinMode(led02,OUTPUT);
 pinMode(led03,OUTPUT);
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(led01,HIGH);
  digitalWrite(led02,HIGH);
  digitalWrite(led03,HIGH);
  delay(1000);
  digitalWrite(led01,LOW);
  digitalWrite(led02,LOW);
  digitalWrite(led03,LOW);
  delay(1000);
  // put your main code here, to run repeatedly:

}