void setup() {
  // put your setup code here, to run once:
Serial.begin(115200);
if(!Serial)Serial.println("serial is not ok");
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(3,HIGH);
  Serial.println("red is on");
  delay(7000);
  digitalWrite(3,LOW);
  Serial.println("red is off");
  delay(0000);
  digitalWrite(4,HIGH);
  Serial.println("blue is on");
  delay(2000);
  digitalWrite(4,LOW);
  Serial.println("blue is off");
  delay(0000);
  digitalWrite(5,HIGH);
  Serial.println("yellow is on");
  delay(10000);
  digitalWrite(4,LOW);
  Serial.println("yellow is off");
  delay(0000);
  digitalWrite(4,HIGH);
  Serial.println("blue is on");
  delay(2000);
  digitalWrite(4,LOW);
  Serial.println("blue is off");
  delay(0000);
}