1# This is my homework.
 2
 3def beginning(string):
 4    length = len(string)
 5    reminder = length % 3
 6    times = length // 3
 7    if reminder in (0, 1):
 8        return string[:times]
 9    else:
10        return string[:times + 1]
11
12
13def middle(string):
14    length = len(string)
15    reminder = length % 3
16    times = length // 3
17    if reminder == 0:
18        return string[times:(2 * times)]
19    elif reminder == 1:
20        return string[times:(2 * times) + 1]
21    else:
22        return string[times + 1:(2 * times) + 1]
23
24
25def end(string):
26    length = len(string)
27    reminder = length % 3
28    times = length // 3
29    if reminder == 0:
30        return string[2 * times:]
31    else:
32        return string[2 * times + 1:]
33
34
35def split_sentence(sentence):
36    words = sentence.split()
37    result = []
38    for word in words:
39        result.append((beginning(word), middle(word), end(word)))
40    return result