1def get_subword_size(word):
 2    return round(len(word) / 3)
 3
 4
 5def beginning(word):
 6    beginning_slice = slice(None, get_subword_size(word))
 7    return word[beginning_slice]
 8
 9
10def end(word):
11    end_slice = slice(len(word) - get_subword_size(word), None)
12    return word[end_slice]
13
14
15def middle(word):
16    subword_size = get_subword_size(word)
17    middle_slice = slice(subword_size, len(word) - subword_size)
18    return word[middle_slice]
19
20
21def split_sentence(sentence):
22    return [
23        (beginning(word), middle(word), end(word)) for word in sentence.split()
24    ]