int statlamp = 0;
void setup() {
  // put your setup code here, to run once:
pinMode(4, INPUT);
pinMode(3, OUTPUT);
pinMode(8, OUTPUT);
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
  Serial.begin(115200);
  Serial.println("Press the button.");
   digitalWrite(7, 1);
    digitalWrite(8, 1);
     digitalWrite(6, 1);
}

void loop() {
  // put your main code here, to run repeatedly:
  int stat = digitalRead(4);
if(stat == 0){
  delay(200);
  statlamp++;
  Serial.println("0");digitalWrite(3, HIGH);}
else{Serial.println("1");digitalWrite(3, LOW);}

if(statlamp > 6){statlamp = 1;}
if(statlamp == 1){Serial.println("t1"); 
digitalWrite(7, 1);
    digitalWrite(8, 0);
     digitalWrite(6, 1);}
else if (statlamp == 2){Serial.println("t2");
digitalWrite(7, 0);
    digitalWrite(8, 1);
     digitalWrite(6, 1);}
else if (statlamp == 3){Serial.println("t3");
digitalWrite(7, 1);
    digitalWrite(8, 1);
     digitalWrite(6, 0);}
     else if (statlamp == 4){Serial.println("t4");
digitalWrite(7, 0);
    digitalWrite(8, 0);
     digitalWrite(6, 1);}
      else if (statlamp == 5){Serial.println("t5");
digitalWrite(7, 1);
    digitalWrite(8, 0);
     digitalWrite(6, 0);}
           else if (statlamp == 6){Serial.println("t6");
digitalWrite(7, 0);
    digitalWrite(8, 1);
     digitalWrite(6, 0);}
}