#!/usr/bin/python

import datetime, time
from time import sleep
import RPi.GPIO as GPIO
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)

def main():
    
    GPIO.setup(27, GPIO.OUT)
    GPIO.setup(6, GPIO.OUT)
    GPIO.setup(5, GPIO.OUT)
    GPIO.setup(22, GPIO.OUT)

    while (True):

        GPIO.output(27, GPIO.LOW)
        GPIO.output(6, GPIO.HIGH)
        GPIO.output(5, GPIO.HIGH)
        GPIO.output(22, GPIO.HIGH)
        
        sleep(30)
        
        GPIO.output(27, GPIO.HIGH)
        GPIO.output(6, GPIO.LOW)
        GPIO.output(5, GPIO.HIGH)
        GPIO.output(22, GPIO.HIGH)
        
        sleep(30)
        
        GPIO.output(27, GPIO.HIGH)
        GPIO.output(6, GPIO.HIGH)
        GPIO.output(5, GPIO.LOW)
        GPIO.output(22, GPIO.HIGH)
        
        sleep(30)
        
        GPIO.output(27, GPIO.HIGH)
        GPIO.output(6, GPIO.HIGH)
        GPIO.output(5, GPIO.HIGH)
        GPIO.output(22, GPIO.LOW)
        
        sleep(30)
        
main()