void setup() {

 pinMode(1, INPUT_PULLUP);//BUTTON
 pinMode(2, OUTPUT);//RED
 pinMode(3, OUTPUT);//YELLOW
 pinMode(4, OUTPUT);//GREEN

 digitalWrite(2,LOW);
 digitalWrite(3,LOW);
 digitalWrite(4,LOW);
}

void loop() {
 digitalWrite(2,HIGH);

if (digitalRead(1) == 0){
 delay(10000);
 digitalWrite(2,LOW);//Turn Off red LED
 digitalWrite(4,HIGH);//Turn on Green LED
 delay(10000);
 digitalWrite(4,LOW);//Turn off Green LED
 digitalWrite(3,HIGH);//Turn on Yellow LED
 delay(2000);
 digitalWrite(3,LOW);//Turn off Yellow LED

 digitalWrite(2,HIGH);//Turn on Red Again
}
}