1def beginning(word):
 2    remainder = len(word) % 3
 3    if remainder == 0 or remainder == 1:
 4        subword_end = len(word) // 3
 5        return word[0:subword_end]
 6    elif remainder == 2:
 7        subword_end = len(word) // 3 + 1
 8        return word[0:subword_end]
 9    else:
10        print("Invalid remainder after division by 3")
11        
12def middle(word):
13    remainder = len(word) % 3
14    if remainder == 0:
15        subword_start = len(word) // 3
16        return word[subword_start:subword_start*2]
17    elif remainder == 2:
18        subword_start = len(word) // 3 + 1
19        subword_end = len(word) // 3 * 2 + 1
20        return word[subword_start:subword_end]
21    elif remainder == 1:
22        subword_start = len(word) // 3
23        subword_end = len(word) // 3 * 2 + 1
24        return word[subword_start:subword_end]
25    else:
26        print("Invalid remainder after division by 3")
27        
28
29def end(word):
30    remainder = len(word) % 3
31    if remainder == 0:
32        subword_start = (len(word) // 3) * 2
33        return word[subword_start:]
34    elif remainder == 2 or remainder == 1:
35        subword_start = len(word) // 3 * 2 + 1
36        return word[subword_start:]
37    else:
38        print("Invalid remainder after division by 3")
39        
40
41def split_sentence(sentence):
42    list_tmp = sentence.split(' ')
43    my_list = []
44    for word in list_tmp:
45        my_tuple = (beginning(word), middle(word), end(word))
46        my_list.append(my_tuple)
47    return my_list