How to aling the printing statements

[Mekala]

Hi,
I have below code to print matching start index and end index with aligned columns.
I use below code:

import re
pattern = re.compile('ab')

matcher = pattern.finditer('zxaababaababa')
for match in matcher:
    print("starting index   ", str(match.start()) + " End index ", str(match.end()))
    #print("The matched endstarting index is: ", match.end())

My output is below:

starting index    3  End index  5
starting index    5  End index  7
starting index    8  End index  10
starting index    10  End index  12

but my desired output in 3rd line the columns are not aligned after 10:

starting index    3  End index  5
starting index    5  End index  7
starting index    8  End index  10
starting index    10 End index  12