int relay_1 = 4;
int relay_2 = 7;
int relay_3 = 8;
int relay_4 = 12;
int relay_5 = 0;
int relay_6 = 0;
int relay_7 = 0;
int relay_8 = 0;
int relayvar = 0;

  void relay_1_high(){digitalWrite(relay_1,HIGH);}
  void relay_1_low(){digitalWrite(relay_1,LOW);}
  void relay_2_high(){digitalWrite(relay_2,HIGH);}
  void relay_2_low(){digitalWrite(relay_2,LOW);}
  void relay_3_high(){digitalWrite(relay_3,HIGH);}
  void relay_3_low(){digitalWrite(relay_3,LOW);}
  void relay_4_high(){digitalWrite(relay_4,HIGH);}
  void relay_4_low(){digitalWrite(relay_4,LOW);}
  void relay_5_high(){digitalWrite(relay_5,HIGH);}
  void relay_5_low(){digitalWrite(relay_5,LOW);}
  void relay_6_high(){digitalWrite(relay_6,HIGH);}
  void relay_6_low(){digitalWrite(relay_6,LOW);}
  void relay_7_high(){digitalWrite(relay_7,HIGH);}
  void relay_7_low(){digitalWrite(relay_7,LOW);}
  void relay_8_high(){digitalWrite(relay_8,HIGH);}
  void relay_8_low(){digitalWrite(relay_8,LOW);}

void setup()
{
  pinMode(relay_1, OUTPUT);pinMode(relay_2, OUTPUT);
  pinMode(relay_3, OUTPUT);pinMode(relay_4, OUTPUT);
  pinMode(2, OUTPUT);pinMode(3, INPUT);pinMode(13, OUTPUT);
  digitalWrite(2, HIGH);pinMode(3, LOW);digitalWrite(13, LOW);
  Serial.begin(57600);
}
void loop()
{
  Serial.print(relayvar);
  if(digitalRead(3) == HIGH){relayvar = relayvar + 1;}
  else{relayvar = relayvar;}

  if(relayvar == 1){relay_1_high();delay(20);}
  else if(relayvar == 2){relay_1_low();delay(20);}
  else if(relayvar == 3){relay_4_high();relay_5_high();delay(20);}
  else if(relayvar == 4){relay_4_low();relay_5_low();delay(20);}
  else if(relayvar == 5){relay_3_high();relay_4_high();delay(20);}
  else if(relayvar == 6){relay_3_low();relay_4_low();delay(20);}
  else if(relayvar == 7){relay_1_high();delay(20);}
  else if(relayvar == 8){relay_1_low();delay(20);}
  else if(relayvar == 9){relay_6_high();relay_8_high();delay(20);}
  else if(relayvar == 10){relay_6_low();relay_8_low();delay(20);}
  else if(relayvar == 11){relay_6_high();relay_7_high();delay(20);}
  else if(relayvar == 12){relay_6_low();relay_7_low();delay(20);}
  else if(relayvar == 13){relay_1_high();delay(20);}
  else if(relayvar == 14){relay_1_low();delay(20);}
  else if(relayvar == 15){relay_2_high();delay(20);}
  else if(relayvar == 16){relay_2_low();delay(20);}
  else if(relayvar == 17){relay_1_high();delay(20);}
  else if(relayvar == 18){relay_1_low();delay(20);}
  else if(relayvar == 19){relay_2_high();delay(20);}
  else if(relayvar == 20){relay_2_low();delay(20);}
  else if(relayvar == 21){relay_1_high();delay(20);}
  else if(relayvar == 22){relay_1_low();delay(20);}
  else if(relayvar == 23){relayvar = 0;delay(20);}
  else {;}
}