Outputs missing

[SamAnw]

Hello,

I've been working on a python program that reads a file instead of inputs. However, there seems to be a problem in my program and it won't read after the first line of the file, so I'm only getting part of the outputs.

Here's the file:

Prob.06.in

WORKING WORKING WORKING WORKING
WORKING BROKEN BROKEN WORKING
BROKEN BROKEN BROKEN BROKEN



And here's the code:

from math import *
txt = "Prob06.in.txt"
file = open(txt,"r")
a=file.read()
state = a.split()
pos = "W"
neg = "B"
i=0
n=0
while i < 4:
    if state[i].startswith(neg):
        n += 8/(2**i)
    elif not state[i].startswith(pos):
         print("invalid entry 1")
    i+=1
LED = ('off','red','green','blue')
LED2= int(n % 4)
LED1= int((n - LED2)/4)
print(LED[LED1], LED[LED2])

The output of this program should be:

off off

red green

blue blue



But the output I'm getting is:

off off



Thankyou in advance!