int relay1 = 1;
int relay2 = 2;
int relay3 = 3;
int relay4 = 4;

void setup() {
 pinMode(relay1, OUTPUT);
 pinMode(relay2, OUTPUT);
 pinMode(relay3, OUTPUT);
 pinMode(relay4, OUTPUT);

  digitalWrite(relay1,HIGH);
  delay(100);
  digitalWrite(relay2,HIGH);
  delay(100);
  digitalWrite(relay3,HIGH);
  delay(100);
  digitalWrite(relay4,HIGH);
  delay(1000);

  digitalWrite(relay1,LOW);
  delay(100);
  digitalWrite(relay2,LOW);
  delay(100);
  digitalWrite(relay3,LOW);
  delay(100);
  digitalWrite(relay4,LOW);
  delay(1000);
}

void loop() {
  digitalWrite(relay1,HIGH);
  delay(100);
  digitalWrite(relay3,HIGH);
  delay(100);
  digitalWrite(relay1,LOW);
  delay(100);
  digitalWrite(relay3,LOW);
  delay(100);
 ////////////////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////
  digitalWrite(relay2,HIGH);
  delay(100); 
  digitalWrite(relay4,HIGH);
  delay(100);
  digitalWrite(relay2,LOW);
  delay(100);
  digitalWrite(relay4,LOW);
  delay(100);
  

}