Regex | The British and American Style of Spelling 2

Source: https://yellorn.com/programming/regex-the-british-and-american-style-of-spelling-2

We’ve already seen how UK and US words differ in their spelling. One other difference is how UK has kept the usage of letters our in some of its words and US has done away with the letter u and uses just or. Given the UK format of the word that has our in it, find out the total number of occurrences of both its UK and US variants in a given sequence of words.

Input Format

First-line contains an integer N. N lines follow, each line contains a sequence of words (W) separated by a single space.
The next lines contain an integer T. T test cases follow in a new line. Each line contains the UK spelling of a word (W’)

Constraints

1 <= N <= 10
Each line doesn’t contain more than 10 words (W)
Each character of W and W’ is a lowercase alphabet.
If C is the count of the number of characters of W or W’, then
1 <= C <= 20
1 <= T <= 10
W’ that has our as a sub-string in it.

Output Format

Output T lines and in each line output the number of UK and US version of (W’) in all of N lines that contains a sequence of words.

Sample Input

2
the odour coming out of the left over food was intolerable
ammonia has a very pungent odor
1
odour

Sample Output

2

Explanation

In the given 2 lines, we find odour and odor once each. So, the total count is 2.

Testcase
Input

10
splendour wealth piece recognition savoury endeavour oil cannot reality fish
sincere savor argument vigour chain awake cap surprising savoury jump
natural study process immoral flag vigour habit assist candy pet
shoulder aside slightly onto crash later disagreement savour rumour entrance
splendour petrol unable inevitably crowd growth fasten leading responsibility artificially
equally alarmed also knowledge ok splendor armory pick sale be
activity rumour ending alcoholic savory curve splendour honestly enjoyable rumour
determined used rumor union affair odor granddaughter elect endeavor alter
savor hour enjoyable waiter divorce at mental prepared folding primary
cheaply vegetable upon splendor disease savor it cast hear cardboard
9
endeavour
savoury
savour
vigour
valour
splendour
rumour
odour
armoury

Output

2
3
4
2
0
5
4
1
1

Solution

import sys
import re
text = ''.join([sys.stdin.readline() for _ in range(int(input()))])
for _ in range(int(input())):
    word = sys.stdin.readline().strip()
    _pattern = re.sub(r"(\w+)(?:our|or)(\w*)", r'\1(our|or)\2', word)
    print(len(re.findall(rf"\b{_pattern}\b", text)))