#define red 2
#define green 5
#define yeloow 27
#define blue 26
#define pushbutton 33
int Reading;
int counter=0;
void setup() {
  // put your setup code here, to run once:
  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(yeloow, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(pushbutton,INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
   // this speeds up the simulation
Reading=digitalRead(pushbutton);
if(Reading==1){
  counter++;
  Serial.print("counter=");
  Serial.println(counter);
  delay(15);
}
if(counter==1){
digitalWrite(red, HIGH);
digitalWrite(green, LOW);
digitalWrite(yeloow, LOW);
digitalWrite(blue, LOW);
}
if(counter==2){
digitalWrite(red, LOW);
digitalWrite(green, HIGH);
digitalWrite(yeloow, LOW);
digitalWrite(blue, LOW);
}
if(counter==3){
digitalWrite(red, LOW);
digitalWrite(green, LOW);
digitalWrite(yeloow, HIGH);
digitalWrite(blue, LOW);
}
if(counter==4){
digitalWrite(red, LOW);
digitalWrite(green, LOW);
digitalWrite(yeloow, LOW);
digitalWrite(blue, HIGH);
counter=0;
}
while(digitalRead(pushbutton)==HIGH){}
}