void setup() {
  // put your setup code here, to run once:
pinMode(4, INPUT);
Serial.begin(9600);
pinMode(10, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);
pinMode(7, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
// Serial.println(digitalRead(4));
int count=0;
while(true){
if(digitalRead(4)==1){count+=1;}
if(count==1)
{delay(100);
  
digitalWrite(8,LOW);
digitalWrite(9,LOW);
digitalWrite(10,LOW);
digitalWrite(7,HIGH);

}
if(count==2)
{delay(100);
digitalWrite(7,LOW);
digitalWrite(9,LOW);
digitalWrite(10,LOW);
digitalWrite(8,HIGH);
}
if(count==3)
{delay(100);
  digitalWrite(7,LOW);
  digitalWrite(8,LOW);
  digitalWrite(10,LOW);
  digitalWrite(9,HIGH);
  }
if(count==4)
{delay(100);
digitalWrite(8,LOW);
digitalWrite(9,LOW);
digitalWrite(7,LOW);
digitalWrite(10,HIGH);
}
if(count==5){count = 1;}

Serial.println(count);
delay(15);
}

}