int led=0;
int led1=1;
int led2=2;
int blinken=500;
int led3=3
int led4=4





void setup() {
  // put your setup code here, to run once:
pinMode(led, OUTPUT);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
}

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


digitalWrite(led, HIGH);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(5000);

digitalWrite(led, HIGH);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, LOW);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, HIGH);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, LOW);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, HIGH);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, LOW);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, HIGH);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, LOW);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, HIGH);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, LOW);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
delay(blinken);
digitalWrite(led, LOW);
digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
delay(2000);

digitalWrite(led, LOW);
digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
delay(5000);

digitalWrite(led, LOW);
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
delay(1000);

digitalWrite(led, LOW);
digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
delay(1500);

}