Unable to do the proper split using re.sub incase of missing data.

[Karz]

This is my code. I used re to convert more than one spaces into a single space.
Then i split the lines and convert into list format.
When all the fields contains data, then i am getting the expected result.
If any of the field is blank(Designation field in the last record), I am not getting the expected output.

import re
inp1 = '''EMP      GRADE    DESIGNATION         SALARY  
Amy      C        Software Engineer   6K
Rock     A        Admin               8K
Paige    D                            9K'''

temp = re.sub('  +', ' ', inp1)
lista = temp.splitlines ()
print(lista)

Output
['EMP GRADE DESIGNATION SALARY ', 'Amy C Software Enginner 6K', 'Rock A Admin 8K', 'Paige D 9K']

Expected Output: (Additional spaces for Designation field for the last record)
['EMP GRADE DESIGNATION SALARY ', 'Amy C Software Engineer 6K', 'Rock A Admin 8K', 'Paige D <Addtional space here> 9K']